diff -r 912948898b07 -r 7b722bddc011 core/com.nokia.carbide.cpp.sdk.core/src/com/nokia/carbide/cpp/internal/api/sdk/SymbianBuildContextDataCache.java
--- a/core/com.nokia.carbide.cpp.sdk.core/src/com/nokia/carbide/cpp/internal/api/sdk/SymbianBuildContextDataCache.java	Thu Aug 12 17:32:31 2010 -0500
+++ b/core/com.nokia.carbide.cpp.sdk.core/src/com/nokia/carbide/cpp/internal/api/sdk/SymbianBuildContextDataCache.java	Fri Aug 13 10:30:38 2010 -0500
@@ -477,7 +477,10 @@
 		}
 		
 		// also search files in same folder as variant.hrh
-		File prefix = context.getPrefixFromVariantCfg().toFile();
+		File prefix = null;
+		if (context.getPrefixFromVariantCfg() != null){
+			prefix = context.getPrefixFromVariantCfg().toFile();
+		}
 		if (sbvPlatform != null){
 			// might be an alternate HRH file to use
 			IPath varVarHRH = sbvPlatform.getBuildVariantHRHFile();