You process the files in spite of the message:
"Unkown file extension"
1) Import
2) Crash
3) Successfully imported
---------------------------
Construct 2 Check failure
---------------------------
Check failure! This is probably a bug:
Creating deleted status undo point with no elements
Condition: !project_elements.empty()
File: Undo.cpp
Line: 62
Function: __thiscall ModifyDeletedStatus::ModifyDeletedStatus(const class std::vector<class ProjectElement *,class std::allocator<class ProjectElement *> > &,bool,const class std::basic_string<wchar_t,struct std::char_traits<wchar_t>,class std::allocator<wchar_t> > &)
Build: release 50 (32-bit) checked
Component: Construct 2 IDE
(Last Win32 error: 0)
You are using a 'checked' release of Construct 2, intended for testing, which causes certain errors to be reported this way. Hit Ctrl+C to copy this messagebox - it's useful information for the developers, so please include it with any bug reports! Click 'Abort' to quit (unsaved data will be lost!),'Retry' to turn off messages for this session and continue, or 'Ignore' to continue normally.
---------------------------
Abbrechen Wiederholen Ignorieren
---------------------------