Hi, "wolfgang hofer" <wolfgang.hofer@xxxxxxxxx> writes: > - The Problem is related to NLS (the LANG Environment Variable) > (when I do unset LANG, everything is OK) If you had used the macros gimp provides for initializing I18N, you wouldn't have had this problem. Your code should look like this: gtk_set_locale(); setlocale (LC_NUMERIC, "C"); Actually I would suggest you copy code from libgimp/gimpintl.h and adapt it your needs. > Should I report this as Bug of the GIMP PDB-Interface ? No, it's a bug in your code. Salut, Sven