diff --git a/source/carla_database.py b/source/carla_database.py
index 85be91052..1f220f2bc 100755
--- a/source/carla_database.py
+++ b/source/carla_database.py
@@ -59,7 +59,10 @@ except:
 if haveLRDF and readEnvVars:
     LADSPA_RDF_PATH_env = os.getenv("LADSPA_RDF_PATH")
     if LADSPA_RDF_PATH_env:
-        ladspa_rdf.set_rdf_path(LADSPA_RDF_PATH_env.split(splitter))
+        try:
+            ladspa_rdf.set_rdf_path(LADSPA_RDF_PATH_env.split(splitter))
+        except:
+            pass
     del LADSPA_RDF_PATH_env
 
 # ------------------------------------------------------------------------------------------------------------
@@ -516,12 +519,16 @@ class SearchPluginsThread(QThread):
                 startValue = self.fLastCheckValue - rdfPadValue
 
                 self._pluginLook(startValue, "LADSPA RDFs...")
-                ladspaRdfInfo = ladspa_rdf.recheck_all_plugins(self, startValue, self.fCurPercentValue, checkValue)
-
-                settingsDir = os.path.join(HOME, ".config", "falkTX")
-                fdLadspa    = open(os.path.join(settingsDir, "ladspa_rdf.db"), 'w')
-                json.dump(ladspaRdfInfo, fdLadspa)
-                fdLadspa.close()
+                try:
+                    ladspaRdfInfo = ladspa_rdf.recheck_all_plugins(self, startValue, self.fCurPercentValue, checkValue)
+                except:
+                    ladspaRdfInfo = None
+
+                if ladspaRdfInfo is not None:
+                    settingsDir = os.path.join(HOME, ".config", "falkTX")
+                    fdLadspa    = open(os.path.join(settingsDir, "ladspa_rdf.db"), 'w')
+                    json.dump(ladspaRdfInfo, fdLadspa)
+                    fdLadspa.close()
 
             if not self.fContinueChecking: return
 
diff --git a/source/utils/CarlaPipeUtils.hpp b/source/utils/CarlaPipeUtils.hpp
index 91caf46a1..600bb017a 100644
--- a/source/utils/CarlaPipeUtils.hpp
+++ b/source/utils/CarlaPipeUtils.hpp
@@ -75,26 +75,21 @@ public:
 
         //----------------------------------------------------------------
 
-        const char* argv[7];
+        const char* argv[6];
 
         //----------------------------------------------------------------
-        // argv[0] => python
+        // argv[0] => filename
 
-        argv[0] = "/usr/bin/python3";
+        argv[0] = filename;
 
         //----------------------------------------------------------------
-        // argv[1] => filename
+        // argv[1-2] => args
 
-        argv[1] = filename;
+        argv[1] = arg1;
+        argv[2] = arg2;
 
         //----------------------------------------------------------------
-        // argv[2-3] => args
-
-        argv[2] = arg1;
-        argv[3] = arg2;
-
-        //----------------------------------------------------------------
-        // argv[4-5] => pipes
+        // argv[3-4] => pipes
 
         int pipe1[2]; // written by host process, read by plugin UI process
         int pipe2[2]; // written by plugin UI process, read by host process
@@ -124,13 +119,13 @@ public:
         pipeRecv[100] = '\0';
         pipeSend[100] = '\0';
 
-        argv[4] = pipeRecv; // reading end
-        argv[5] = pipeSend; // writting end
+        argv[3] = pipeRecv; // reading end
+        argv[4] = pipeSend; // writting end
 
         //----------------------------------------------------------------
-        // argv[6] => null
+        // argv[5] => null
 
-        argv[6] = nullptr;
+        argv[5] = nullptr;
 
         //----------------------------------------------------------------
         // fork
@@ -591,7 +586,7 @@ private:
 
     // -------------------------------------------------------------------
 
-    static bool fork_exec(const char* const argv[7], int* const retp) noexcept
+    static bool fork_exec(const char* const argv[6], int* const retp) noexcept
     {
         const pid_t ret = *retp = vfork();