Unable to use my Digital Signature

[michaelg2108]

I have been using my digital signature for over 10 years without a problem, until today ?

I went to sign a pdf. document, using my signature and when I click on sign and then click on place signature another toolbar menu pops up.

This has never occurred before. I am using Adobe Acrobat 8 Professional and recently I installed an update, and since then my toolbar menu is also missing.

How do I solve my problem to place my digital signature on my pdf. documents when for many years I had no problem ?

..thank you