Upgrade the DB from 2007A to 8.8 PL 10- Error in Fixed Assets Master Data

Dear Expert,

we r using smoothly Fixed Assets Add-on in 2007A environment, Now we are upgrade to SAP B1 8.8 SP00 PL10. When i view the Fixed Assets Master Data by choosing from List Its shows all of my master data list, but when i select any of them system shown nothing in FA Master Data form , please guide

Tahir