[Critical] TaskSpace may hang the shell completely

[Drugoy]

STR:

1. Open a new TaskSpace frame.
2. Open an unsupported application (for example Microsoft Office 2010 Word).
3. Drag'n'drop the unsupported application's window onto TaskSpace's frame. [An error shows up]
4. Dick around the windows. Try to reproduce the above steps without closing the error's window.

Expected result: Unsupported app remains in the separate window and everything is fine, except that b

Actual result: TaskSpace's frame partly consumes the unsupported application's window. The unsupported application's window becomes unresponive and may make hang the whole WinExplorer shell (the cursor becomes a circle going rounds and the clicks anywhere - get ignored. This is how it looks:

This issue is related to issue #9 and all the unsupported applications.

[cshnik]

Fixed in v0.1.5.3.