Hello Peter and Welcome!!
It sounds like some disk permissions are bad. Let's try repairing those and see what happens. Goto your applications folder --> Utilities --> Disk Utility --> make sure the First Aid tab is selected. Select your Macintosh HD drive and click Repair Disk Permissions. After that's done, restart your computer then try opening those programs and see if the problem persists. Let us know how this works out for you!!!
Searay