diff --git a/common/util/json_util.cpp b/common/util/json_util.cpp
index 08661fb076..a1edd3a499 100644
--- a/common/util/json_util.cpp
+++ b/common/util/json_util.cpp
@@ -1,3 +1,4 @@
+#include "common/log/log.h"
 #include "common/util/assert.h"
 #include "json_util.h"
 
@@ -75,8 +76,17 @@ std::string strip_cpp_style_comments(const std::string& input) {
  * Parse JSON file with comments stripped. Unlike the default comment stripping feature
  * of nlohmann::json, this allows you to have multiple comments in a row!
  */
-nlohmann::json parse_commented_json(const std::string& input) {
-  return nlohmann::json::parse(strip_cpp_style_comments(input));
+nlohmann::json parse_commented_json(const std::string& input, const std::string& source_name) {
+  try {
+    return nlohmann::json::parse(strip_cpp_style_comments(input));
+  } catch (const std::exception& e) {
+    if (source_name.empty()) {
+      lg::error("Error parsing JSON file: {}", e.what());
+    } else {
+      lg::error("Error parsing JSON in file {}: {}", source_name, e.what());
+    }
+    throw;
+  }
 }
 
 /*!
diff --git a/common/util/json_util.h b/common/util/json_util.h
index d068e93140..9e3a21f6dd 100644
--- a/common/util/json_util.h
+++ b/common/util/json_util.h
@@ -5,5 +5,5 @@
 #include "third-party/json.hpp"
 
 std::string strip_cpp_style_comments(const std::string& input);
-nlohmann::json parse_commented_json(const std::string& input);
+nlohmann::json parse_commented_json(const std::string& input, const std::string& source_name);
 Range<int> parse_json_optional_integer_range(const nlohmann::json& json);
diff --git a/decompiler/IR2/AtomicOpForm.cpp b/decompiler/IR2/AtomicOpForm.cpp
index 53c8d62128..ccf74204d0 100644
--- a/decompiler/IR2/AtomicOpForm.cpp
+++ b/decompiler/IR2/AtomicOpForm.cpp
@@ -645,6 +645,18 @@ Form* LoadVarOp::get_load_src(FormPool& pool, const Env& env) const {
         }
       }
     }
+
+    if (m_kind == Kind::FLOAT && m_size == 4) {
+      assert((label.offset % 4) == 0);
+      const auto& words = env.file->words_by_seg.at(label.target_segment);
+      if ((int)words.size() > label.offset / 4) {
+        auto word = words.at(label.offset / 4);
+        assert(word.kind == LinkedWord::PLAIN_DATA);
+        float value;
+        memcpy(&value, &word.data, 4);
+        return pool.alloc_single_element_form<ConstantFloatElement>(nullptr, value);
+      }
+    }
   }
 
   auto source = pool.alloc_single_element_form<SimpleExpressionElement>(nullptr, m_src, m_my_idx);
diff --git a/decompiler/ObjectFile/ObjectFileDB.cpp b/decompiler/ObjectFile/ObjectFileDB.cpp
index 98e55a51a6..3e41e6e933 100644
--- a/decompiler/ObjectFile/ObjectFileDB.cpp
+++ b/decompiler/ObjectFile/ObjectFileDB.cpp
@@ -163,7 +163,7 @@ ObjectFileDB::ObjectFileDB(const std::vector<std::string>& _dgos,
 }
 
 void ObjectFileDB::load_map_file(const std::string& map_data) {
-  auto j = parse_commented_json(map_data);
+  auto j = parse_commented_json(map_data, "ObjectFileDB Map File");
 
   for (auto& x : j) {
     auto mapped_name = x[0].get<std::string>();
diff --git a/decompiler/config.cpp b/decompiler/config.cpp
index 4485ea7b3e..38b4750399 100644
--- a/decompiler/config.cpp
+++ b/decompiler/config.cpp
@@ -15,7 +15,7 @@ namespace {
 nlohmann::json read_json_file_from_config(const nlohmann::json& cfg, const std::string& file_key) {
   auto file_name = cfg.at(file_key).get<std::string>();
   auto file_txt = file_util::read_text_file(file_util::get_file_path({file_name}));
-  return parse_commented_json(file_txt);
+  return parse_commented_json(file_txt, file_name);
 }
 }  // namespace
 
@@ -25,7 +25,7 @@ nlohmann::json read_json_file_from_config(const nlohmann::json& cfg, const std::
 Config read_config_file(const std::string& path_to_config_file) {
   Config config;
   auto config_str = file_util::read_text_file(path_to_config_file);
-  auto cfg = parse_commented_json(config_str);
+  auto cfg = parse_commented_json(config_str, path_to_config_file);
 
   config.game_version = cfg.at("game_version").get<int>();
 
diff --git a/decompiler/config/jak1_ntsc_black_label/label_types.jsonc b/decompiler/config/jak1_ntsc_black_label/label_types.jsonc
index da438a1b1f..09c72893b7 100644
--- a/decompiler/config/jak1_ntsc_black_label/label_types.jsonc
+++ b/decompiler/config/jak1_ntsc_black_label/label_types.jsonc
@@ -1,15 +1,11 @@
 {
   "gcommon": [
-    ["L345", "float", true],
     ["L346", "uint64", true]
   ],
 
   "gkernel": [
     ["L345", "_auto_", true],
     ["L344", "_auto_", true],
-    ["L346", "float", true],
-    ["L347", "float", true],
-    ["L348", "float", true],
     ["L289", "_auto_", true],
     ["L282", "_auto_", true],
     ["L122", "_lambda_", true],
@@ -23,9 +19,7 @@
   "gstring": [["L170", "float", true]],
 
   "math": [
-    ["L41", "float", true],
-    ["L34", "float", true],
-    ["L35", "float", true]
+    ["L41", "float", true]
   ],
 
   "vector-h": [
@@ -43,8 +37,6 @@
     ["L2", "_auto_", true]
   ],
 
-  "matrix": [["L60", "float", true]],
-
   "transform": [["L11", "float", true]],
   "quaternion-h": [["L1", "quaternion", true]],
   "quaternion": [
@@ -54,62 +46,9 @@
     ["L70", "vector", true],
     ["L71", "vector", true],
     ["L72", "vector", true],
-    ["L77", "float", true],
-    ["L78", "float", true],
-    ["L79", "float", true],
-    ["L80", "float", true],
-    ["L81", "float", true],
-    ["L82", "float", true],
-    ["L93", "float", true],
-    ["L94", "float", true]
-  ],
-
-  "euler": [["L18", "float", true]],
-
-  "geometry": [
-    ["L115", "float", true],
-    ["L116", "float", true],
-    ["L117", "float", true],
-    ["L118", "float", true],
-    ["L119", "float", true],
-    ["L120", "float", true],
-    ["L121", "float", true],
-    ["L122", "float", true],
-    ["L123", "float", true],
-    ["L124", "float", true],
-    ["L125", "float", true],
-    ["L126", "float", true],
-    ["L127", "float", true],
-    ["L128", "float", true]
-  ],
-
-  "trigonometry": [
-    ["L143", "float", true],
-    ["L144", "float", true],
-    ["L145", "float", true],
-    ["L137", "float", true],
-    ["L106", "float", true],
-    ["L134", "float", true],
-    ["L112", "float", true],
-    ["L114", "float", true],
-    ["L135", "float", true],
-    ["L121", "float", true],
-    ["L150", "float", true],
-    ["L147", "float", true],
-    ["L149", "float", true],
-    ["L107", "float", true],
-    ["L129", "float", true],
-    ["L152", "float", true],
-    ["L109", "float", true],
-    ["L138", "float", true],
-    ["L127", "float", true],
-    ["L128", "float", true],
-    ["L110", "float", true],
-    ["L136", "float", true]
+    ["L81", "float", true]
   ],
 
-  "timer": [["L20", "float", true]],
-
   "dma": [["L56", "uint64", true]],
 
   "dma-bucket": [["L10", "uint64", true]],
@@ -117,10 +56,7 @@
   "video-h": [["L1", "video-parms", true]],
 
   "pad": [
-    ["L44", "float", true],
-    ["L42", "float", true],
-    ["L43", "float", true],
-    ["L41", "float", true]
+    ["L44", "float", true]
   ],
 
   "dma-disasm": [["L148", "(array vif-disasm-element)", true]],
@@ -130,8 +66,6 @@
 
   "display-h": [["L6", "rgba", true]],
 
-  "loader-h": [["L10", "float", true]],
-
   "level-h": [["L3", "level-group", true]],
 
   "level-info": [
@@ -166,63 +100,15 @@
 
   "level-h": [["L3", "_auto_", true]],
 
-  "math-camera": [
-    ["L51", "float", true],
-    ["L52", "float", true],
-    ["L53", "float", true],
-    ["L55", "float", true],
-    ["L56", "float", true],
-    ["L38", "float", true],
-    ["L37", "float", true],
-    ["L54", "float", true],
-    ["L50", "float", true],
-    ["L49", "float", true],
-    ["L27", "float", true],
-    ["L35", "float", true],
-    ["L34", "float", true],
-    ["L28", "float", true],
-    ["L26", "float", true],
-    ["L34", "float", true],
-    ["L33", "float", true],
-    ["L30", "float", true],
-    ["L44", "float", true],
-    ["L45", "float", true],
-    ["L32", "float", true],
-    ["L31", "float", true],
-    ["L47", "float", true],
-    ["L48", "float", true],
-    ["L46", "float", true],
-    ["L36", "float", true],
-    ["L43", "float", true],
-    ["L42", "float", true],
-    ["L40", "float", true],
-    ["L41", "float", true],
-    ["L39", "float", true],
-    ["L59", "float", true]
-  ],
-
   "font-h": [
     ["L18", "matrix", true],
-    ["L19", "float", true],
     ["L17", "font-work", true]
   ],
 
   "text-h": [["L2", "_auto_", true]],
 
   "display": [
-    ["L47", "float", true],
-    ["L42", "float", true],
-    ["L43", "float", true],
-    ["L44", "float", true],
-    ["L45", "float", true],
-    ["L48", "float", true],
-    ["L46", "float", true],
-    ["L50", "float", true],
-    ["L49", "float", true],
     ["L87", "float", true],
-    ["L77", "float", true],
-    ["L78", "float", true],
-    ["L79", "float", true],
     ["L76", "(pointer uint32)", true, 2],
     ["L51", "uint64", true],
     ["L52", "uint64", true],
@@ -296,29 +182,9 @@
   ],
 
   "ocean-frames": [["L1", "(pointer uint32)", true, 16384]],
-
-  "sky-h": [
-    ["L73", "float", true],
-    ["L71", "float", true],
-    ["L72", "float", true]
-  ],
-
-  "mood-h": [["L3", "float", true]],
   
   "time-of-day-h": [["L2", "time-of-day-context", true]],
 
-  "merc-h": [
-    ["L4", "float", true],
-    ["L5", "float", true],
-    ["L6", "float", true],
-    ["L7", "float", true]
-  ],
-
-  "shadow-cpu-h": [
-    ["L9", "float", true],
-    ["L10", "float", true]
-  ],
-
   "game-info-h": [
     ["L4", "game-bank", true],
     ["L3", "game-info", true]
@@ -327,13 +193,10 @@
   "wind-h": [["L3", "_auto_", true]],
 
   "dynamics-h": [
-    ["L7", "float", true],
     ["L6", "_auto_", true]
   ],
 
   "surface-h": [
-    ["L72", "float", true],
-    ["L71", "float", true],
     ["L68", "_auto_", true],
     ["L67", "_auto_", true],
     ["L66", "_auto_", true],
@@ -376,29 +239,15 @@
   "pat-h": [["L1", "(inline-array pat-mode-info)", true, 4]],
 
   "fact-h": [
-    ["L35", "_auto_", true],
-    ["L36", "float", true]
+    ["L35", "_auto_", true]
   ],
 
   "sync-info": [
     ["L78", "float", true],
-    ["L79", "float", true],
-    ["L80", "float", true],
-    ["L81", "float", true],
-    ["L82", "float", true],
-    ["L83", "float", true],
     ["L84", "float", true],
-    ["L85", "float", true],
     ["L86", "float", true]
   ],
 
-  "smush-control-h": [
-    ["L20", "float", true],
-    ["L18", "float", true],
-    ["L19", "float", true],
-    ["L17", "float", true]
-  ],
-
   "collide-shape-h": [
     ["L27", "float", true],
     ["L25", "_auto_", true],
@@ -410,8 +259,7 @@
   "vector": [
     ["L114", "float", true],
     ["L113", "float", true],
-    ["L112", "float", true],
-    ["L111", "float", true]
+    ["L112", "float", true]
   ],
 
   "texture": [
@@ -425,19 +273,7 @@
     ["L349", "_auto_", true],
     ["L369", "uint64", true],
     ["L373", "uint64", true],
-    ["L371", "uint64", true],
-    ["L364", "float", true],
-    ["L360", "float", true],
-    ["L362", "float", true],
-    ["L359", "float", true],
-    ["L358", "float", true],
-    ["L361", "float", true]
-  ],
-
-  "lights": [
-    ["L8", "float", true],
-    ["L9", "float", true],
-    ["L10", "float", true]
+    ["L371", "uint64", true]
   ],
 
   "hud-h": [
diff --git a/test/decompiler/FormRegressionTest.cpp b/test/decompiler/FormRegressionTest.cpp
index 6d0f0d756d..cb83f70c87 100644
--- a/test/decompiler/FormRegressionTest.cpp
+++ b/test/decompiler/FormRegressionTest.cpp
@@ -80,7 +80,7 @@ parse_var_json(const std::string& str) {
   std::vector<std::string> args;
   std::unordered_map<std::string, LocalVarOverride> var_overrides;
 
-  auto j = parse_commented_json(str);
+  auto j = parse_commented_json(str, "Regression Test variable map");
 
   auto arg = j.find("args");
   if (arg != j.end()) {
diff --git a/test/offline/offline_test_main.cpp b/test/offline/offline_test_main.cpp
index 71a0d499e4..f7f37ff39a 100644
--- a/test/offline/offline_test_main.cpp
+++ b/test/offline/offline_test_main.cpp
@@ -168,7 +168,8 @@ int main(int argc, char** argv) {
   }
   // use the all_objs.json file to place them in the correct build order
   auto j = parse_commented_json(
-      file_util::read_text_file(file_util::get_file_path({"goal_src", "build", "all_objs.json"})));
+      file_util::read_text_file(file_util::get_file_path({"goal_src", "build", "all_objs.json"})),
+      "all_objs.json");
   for (auto& x : j) {
     auto mapped_name = x[0].get<std::string>();
     for (auto& p : reference_files_rough_order) {