Can't enter layer name

Having trouble with Photoshop CS4, ever since downloading a "maintenance" app (highly recommended) which wreaked havoc w/ adobe software, for some reason.

Primary problem is can't name layers - can highlight "Layer 2" (example) but when I start typing in a name, keyboard actions turn into keyboard shortcuts so tools start changing, etc - but no layer name unless I go into "Layer Properties", where I can enter it.

Have run DiskWarrior, have repaired permissions, have restarted, etc etc. Any suggestions? Also having same problem with InDesign. iMac os 10.6.8

"Any suggestions"
DELETE the app
second suggestion is
Reset ps preferences see procedure link How to delete/reset Photoshop preferences