Can't load more than 241 level with Application.LoadLevelAdditiveAsync. After loading 242 levels, application throws:

"Could not open file /var/mobile/Applications/037D2A1D-D746-4363-B241-A892DF874AB9/testLoadAdditive.app/Data/sharedassets512.assets for read

(Filename: /Applications/buildAgent/work/afa2580bf6048259/Runtime/Serialize/FileCache.cpp Line: 136)".

Attached two log files from Xcode;

More info is in user's description.

Reproduced on iPhone 4s, iOS 5.1.1;
Tested on Unity versions: 4.2.2, 4.3.0f4, 4.5.0a1;
Mac standalone works fine;

Repro steps:
1. open attached project "00130328_-_LoadLevelAdditive_limit.zip";
2. build to iOS platform;
3. launch and observe the console window;

Workaround:
Additive loading doesn't close asset files. Use Resources.UnloadUnusedAssets() to force closing.

Won't fix reason:
We're already working on streaming improvements, and this will be fixed with incoming changes.