diff --git a/src/rez/plugin_managers.py b/src/rez/plugin_managers.py
index c10faf32b..5f9b4985e 100644
--- a/src/rez/plugin_managers.py
+++ b/src/rez/plugin_managers.py
@@ -116,6 +116,8 @@ def load_plugins(self):
         paths = reversed(paths)
 
         for path in paths:
+            print_debug("searching plugin path %s...", path)
+
             for loader, modname, ispkg in pkgutil.iter_modules(
                     [path], package.__name__ + '.'):
 
diff --git a/src/rezplugins/shell/cmd.py b/src/rezplugins/shell/cmd.py
index 87f1e52c9..bd3ee3a43 100644
--- a/src/rezplugins/shell/cmd.py
+++ b/src/rezplugins/shell/cmd.py
@@ -137,10 +137,10 @@ def gen_expected_regex(parts):
 
     def _bind_interactive_rez(self):
         if config.set_prompt and self.settings.prompt:
-            stored_prompt = os.getenv("REZ_STORED_PROMPT")
+            stored_prompt = os.getenv("REZ_STORED_PROMPT_CMD")
             curr_prompt = stored_prompt or os.getenv("PROMPT", "")
             if not stored_prompt:
-                self.setenv("REZ_STORED_PROMPT", curr_prompt)
+                self.setenv("REZ_STORED_PROMPT_CMD", curr_prompt)
 
             new_prompt = "%%REZ_ENV_PROMPT%%"
             new_prompt = (new_prompt + " %s") if config.prefix_prompt \
diff --git a/src/rezplugins/shell/csh.py b/src/rezplugins/shell/csh.py
index 980a2706b..a2077e814 100644
--- a/src/rezplugins/shell/csh.py
+++ b/src/rezplugins/shell/csh.py
@@ -111,10 +111,10 @@ def escape_string(self, value):
     def _bind_interactive_rez(self):
         if config.set_prompt and self.settings.prompt:
             # TODO: Do more like in sh.py, much less error prone
-            stored_prompt = os.getenv("REZ_STORED_PROMPT")
+            stored_prompt = os.getenv("REZ_STORED_PROMPT_CSH")
             curr_prompt = stored_prompt or os.getenv("prompt", "[%m %c]%# ")
             if not stored_prompt:
-                self.setenv("REZ_STORED_PROMPT", '"%s"' % curr_prompt)
+                self.setenv("REZ_STORED_PROMPT_CSH", '"%s"' % curr_prompt)
 
             new_prompt = "$REZ_ENV_PROMPT"
             new_prompt = (new_prompt + " %s") if config.prefix_prompt \
diff --git a/src/rezplugins/shell/sh.py b/src/rezplugins/shell/sh.py
index 49a546c90..4c0bef712 100644
--- a/src/rezplugins/shell/sh.py
+++ b/src/rezplugins/shell/sh.py
@@ -92,11 +92,11 @@ def get_startup_sequence(cls, rcfile, norc, stdin, command):
 
     def _bind_interactive_rez(self):
         if config.set_prompt and self.settings.prompt:
-            self._addline(r'if [ -z "$REZ_STORED_PROMPT" ]; then export REZ_STORED_PROMPT="$PS1"; fi')
+            self._addline(r'if [ -z "$REZ_STORED_PROMPT_SH" ]; then export REZ_STORED_PROMPT_SH="$PS1"; fi')
             if config.prefix_prompt:
-                cmd = 'export PS1="%s $REZ_STORED_PROMPT"'
+                cmd = 'export PS1="%s $REZ_STORED_PROMPT_SH"'
             else:
-                cmd = 'export PS1="$REZ_STORED_PROMPT%s "'
+                cmd = 'export PS1="$REZ_STORED_PROMPT_SH %s"'
             self._addline(cmd % r"\[\e[1m\]$REZ_ENV_PROMPT\[\e[0m\]")
 
     def setenv(self, key, value):