diff -r b72c6db6890b -r 5dc02b23752f src/gui/painting/qcups.cpp
--- a/src/gui/painting/qcups.cpp	Wed Jun 23 19:07:03 2010 +0300
+++ b/src/gui/painting/qcups.cpp	Tue Jul 06 15:10:48 2010 +0300
@@ -343,7 +343,8 @@
     if (!isAvailable())
         return false;
     const char *ppdFile = _cupsGetPPD(printerName);
-    unlink(ppdFile);
+    if (ppdFile)
+        unlink(ppdFile);
     return (ppdFile != 0);
 }