Hi, I encountered a problem yesterday that all layout tests crashed on Mac Snow Leopard. DumpRenderTree produces the following output when run from command line: $ time ./DumpRenderTree 2010-08-31 10:39:25.847 DumpRenderTree[26725:903] The requested plugin at (/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home) cannot be loaded on this system. Using CurrentJDK instead. 2010-08-31 10:39:25.849 DumpRenderTree[26725:903] An uncaught exception was raised 2010-08-31 10:39:25.849 DumpRenderTree[26725:903] *** -[NSCFDictionary setObject:forKey:]: attempt to insert nil value (key: WebPluginMIMETypes) 2010-08-31 10:39:25.850 DumpRenderTree[26725:903] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSCFDictionary setObject:forKey:]: attempt to insert nil value (key: WebPluginMIMETypes)' *** Call stack at first throw: ( 0 CoreFoundation 0x00007fff88a8acc4 __exceptionPreprocess + 180 1 libobjc.A.dylib 0x00007fff84c620f3 objc_exception_throw + 45 2 CoreFoundation 0x00007fff88a8aae7 +[NSException raise:format:arguments:] + 103 3 CoreFoundation 0x00007fff88a8aa74 +[NSException raise:format:] + 148 4 Foundation 0x00007fff8459ea9b -[NSCFDictionary setObject:forKey:] + 227 5 JavaPluginCocoa 0x000000010519fbc4 BP_CreatePluginMIMETypesPreferences + 162 6 WebKit 0x00000001003da00e -[WebBasePluginPackage createPropertyListFile] + 46 7 WebKit 0x00000001003d9fcc -[WebBasePluginPackage pListForPath:createFile:] + 92 8 WebKit 0x00000001003db5b7 -[WebBasePluginPackage getPluginInfoFromPLists] + 1975 9 WebKit 0x0000000100459182 -[WebPluginPackage initWithPath:] + 354 10 WebKit 0x00000001003da073 +[WebBasePluginPackage pluginWithPath:] + 51 11 WebKit 0x000000010045797d -[WebPluginDatabase(Internal) _scanForNewPlugins] + 429 12 WebKit 0x0000000100458344 -[WebPluginDatabase refresh] + 100 13 WebKit 0x000000010045824d +[WebPluginDatabase sharedDatabase] + 157 14 DumpRenderTree 0x000000010000cfda _Z14dumpRenderTreeiPPKc + 610 15 DumpRenderTree 0x000000010000d57f main + 94 16 DumpRenderTree 0x0000000100001fe4 start + 52 ) terminate called after throwing an instance of 'NSException' Abort trap (core dumped) real 3m38.911s user 0m0.042s sys 0m13.951s =============================== I tried to remove /Library/Internet Plug-Ins/JavaPluginCocoa.bundle, then DumpRenderTree worked. Anyone has encountered the same problem and/or has better solution? BTW, why is crash reporting for DumpRenderTree so slow (3.5 minutes)? Thanks, Xianzhu