I created a pdf document including digital signature field in livecycle. When saving and opening the document in acrobat 8 pro signing works fine, i.e. I click the signing field and it prompts for digital signature ID & password.
But, when I click the field in Reader 8 (not pro version), nothing happens. It doesn't prompt for digital signature ID.
I clearly set the version limit in livecycle to be reader 7 and upwards (not pro versions).