--- a/core/com.nokia.carbide.cpp.sdk.core/src/com/nokia/carbide/cpp/internal/sdk/core/model/SymbianSDK.java	Fri Jun 11 12:09:52 2010 -0500
+++ b/core/com.nokia.carbide.cpp.sdk.core/src/com/nokia/carbide/cpp/internal/sdk/core/model/SymbianSDK.java	Fri Jun 11 14:13:49 2010 -0500
@@ -399,6 +399,8 @@
 	}
 
 	public void setPrefixFile(IPath prefixFile, String builderId) {
+		if (prefixFile == null)
+			return;
 		File file = new File(prefixFile.toOSString());
 		prefixFileMap.put(builderId, file);
 	}