Apparently, wxConfigBase::Write() does not update values for next access on all platforms unless Flush() method is called. Added many calls to wxConfigBase::Flush() to make sure the Rad() calls get the right values.

src/prefs/DevicePrefs.cpp

@@ -347,6 +347,7 @@ bool DevicePrefs::Apply()
    }
    if (map) {
       gPrefs->Write(wxT("/AudioIO/PlaybackDevice"), map->deviceString);
+      gPrefs->Flush();
    }
 
    map = NULL;
@@ -365,9 +366,9 @@ bool DevicePrefs::Apply()
          gPrefs->Write(wxT("/AudioIO/RecordingSource"),
                        wxT(""));
       }
-
       gPrefs->Write(wxT("/AudioIO/RecordChannels"),
                     mChannels->GetSelection() + 1);
+      return gPrefs->Flush();
    }
 
    return true;

src/prefs/KeyConfigPrefs.cpp

@@ -293,6 +293,7 @@ void KeyConfigPrefs::OnImport(wxCommandEvent & e)
 
    path = wxPathOnly(file);
    gPrefs->Write(wxT("/DefaultOpenPath"), path);
+   gPrefs->Flush();
 
    XMLFileReader reader;
    if (!reader.Parse(mManager, file)) {
@@ -324,6 +325,7 @@ void KeyConfigPrefs::OnExport(wxCommandEvent & e)
 
    path = wxPathOnly(file);
    gPrefs->Write(wxT("/DefaultExportPath"), path);
+   gPrefs->Flush();
 
    XMLFileWriter prefFile;
    
@@ -558,9 +560,10 @@ bool KeyConfigPrefs::Apply()
             gPrefs->Write(name, key);
          }
       }
+      gPrefs->Flush();
    }
 
-   return true;
+   return gPrefs->Flush();
 }
 
 void KeyConfigPrefs::Cancel()

src/prefs/MidiIOPrefs.cpp

@@ -271,7 +271,7 @@ bool MidiIOPrefs::Apply()
                                      wxString(info->name, wxConvLocal).c_str()));
    }
 #endif
-   return true;
+   return gPrefs->Flush();
 }
 
 bool MidiIOPrefs::Validate()

src/prefs/PrefsDialog.cpp

@@ -245,6 +245,7 @@ void PrefsDialog::OnOK(wxCommandEvent & event)
    }
 
    gPrefs->Write(wxT("/Prefs/PrefsCategory"), (long)mCategories->GetSelection());
+   gPrefs->Flush();
 
 #if USE_PORTMIXER
    if (gAudioIO) {

src/prefs/QualityPrefs.cpp

@@ -226,6 +226,7 @@ bool QualityPrefs::Apply()
    // value in prefs comes from the second field.
    if (mOtherSampleRate->IsEnabled()) {
       gPrefs->Write(wxT("/SamplingRate/DefaultProjectSampleRate"), mOtherSampleRateValue);
+      gPrefs->Flush();
    }
 
    // Tell CopySamples() to use these ditherers now

src/prefs/RecordingPrefs.cpp

@@ -185,8 +185,11 @@ bool RecordingPrefs::Apply()
       double targetpeak, deltapeak;
       gPrefs->Read(wxT("/AudioIO/TargetPeak"),  &targetpeak);
       gPrefs->Read(wxT("/AudioIO/DeltaPeakVolume"), &deltapeak);
-      if (targetpeak + deltapeak > 100.0 || targetpeak - deltapeak < 0.0)
+      if (targetpeak + deltapeak > 100.0 || targetpeak - deltapeak < 0.0) 
+      {
          gPrefs->Write(wxT("/AudioIO/DeltaPeakVolume"), min(100.0 - targetpeak, targetpeak));
+         gPrefs->Flush();
+      }
 
       int value;
       gPrefs->Read(wxT("/AudioIO/AnalysisTime"), &value);
@@ -197,7 +200,7 @@ bool RecordingPrefs::Apply()
       if (value < 0)
          gPrefs->Write(wxT("/AudioIO/NumberAnalysis"), AILA_DEF_NUMBER_ANALYSIS);
    #endif
-   return true;
+   return gPrefs->Flush();
 }