installing or deinstalling coreldraw x6 fails

I encounter the following problem with installing CorelDraw X6, de-installing it, or updating with CorelDraw hotfix or other updates:

- a new window opens, a small window, that cannot be enlarged or minimised;

- nothing happens, only cancel within this window is possible.

- it happens with switched-off virus protection, windows firewall and even in safe mode.

I cannot access CorelDraw anymore, re-install it, de-install it patch it with an update .

Please help.

Same thing with Painter X3

Seems like the installation procedure or files are corrupt for Windows 

I use W7-ultimate x64