http://www.amirai.net/bugs/renamebug.zip
Open the .capx, rename the sprite to sprite2, open the file menu and select save as single file, save it as bug2.capx, error appears:
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Construct 2 Check failure
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Check failure! This is probably a bug:
Retrieving working path but texture has no working files
Condition: !working_files.empty()
File: Projects\ObjectTexture.cpp
Line: 323
Function: const class std::basic_string<wchar_t,struct std::char_traits<wchar_t>,class std::allocator<wchar_t> > &__thiscall ObjectTexture::GetWorkingPath(void) const
Build: release 76 (32-bit) checked
Component: Construct 2 IDE
(Last Win32 error: 3)
Running vista 32 bit.