I had the problem now on 3 different win7-64 PC's:
I start Codewarrior (Special Edition for Kinetis, V 10.6).
After about 2 seconds, it disappears.
I used this CW version since it was released, and it worked on all 3 PC's before.
I usually change a lot on PC's, as developer, try new software, new hardware, install / update drivers etc. etc.
It is difficult to figure the reasoun out by stepping back to a previous state of PC, repeat all
changes, etc. etc. This is just too much effort.
I tried a lot: Re-Installing, updating, downgrading, registry clean, malware check, etc. etc.
Only thing which worked was setting a previous restore point on win7.
But this is not a permament solution, as the problem ocurs again and again, and after restoring,
win7 has "new updates", after which the problem re-occurs.
I can't analyze this or figure out the reason.
Any help would be appreciated.