diff --git a/bin/pdflatexex_mod.py b/bin/pdflatexex_mod.py
index bc37cf2..afc9e45 100755
--- a/bin/pdflatexex_mod.py
+++ b/bin/pdflatexex_mod.py
@@ -107,6 +107,8 @@ def run(texfile, pdflatexopts=[], mode=MODE_EX, pdfbasename=None, pdflatex=None,
         texfile_dir = None # None, by default (meaning CWD)
 
     texfile_full = os.path.realpath(os.path.abspath(texfile))
+    if sys.platform.startswith('win'):
+        texfile_full = texfile_full.replace('\\', '/')
 
     workdir = tempfile.mkdtemp();
 
diff --git a/guicompiler/compilerwidget.py b/guicompiler/compilerwidget.py
index 2e754ff..4b5a877 100644
--- a/guicompiler/compilerwidget.py
+++ b/guicompiler/compilerwidget.py
@@ -161,7 +161,7 @@ def show_pdf(self, mode):
         fnpdfabs = os.path.realpath(os.path.abspath(fnpdf))
 
         if not os.path.exists(fnpdfabs):
-            QMessageBox.critical(self, "Error", u"The file %s does not exist yet. compile it first!"%(fnpdf))
+            QMessageBox.critical(self, "Error", u"The file %s does not exist yet. compile it first!"%(fnpdfabs))
             return
 
         url = 'file:' + urllib.pathname2url(fnpdfabs)