FactoryTalk 8 Application/Tag Problems

[enfermot 0]

I have a FactoryTalk 8 application that exhibits some weird symptoms when I run it. I have buttons whose "visible" state and "enabled" state are based on HMI tags. The states of these buttons don't update. I have screens that fail to close when the "abort" command is issued. I have vba that connects to a tag group, which fails to retrieve the value and produces an error. Some tag values from the PLC (always direct-addressed, I think) show up correctly, even when other symptoms above are happening. These issues randomly go away sometimes after a restart and the entire application runs fine. Does anybody have a clue what could be doing this? (Using Windows 7 Professional 6.1.7601 Service Pack 1 Build 7601, SE version 8.10.00 (CPR 9 SR 7.4), Internet Explorer 11.0.9600.17633) Edited 15 Oct 2015 by enfermot