Poser 8 PC 64bit

I have V4 in the Hair Room. When I use the Translate/Pull tool on a selected group of hairs they begin to disappear a few at a time until they're gone. If I save and return, they are still gone.

I have had this happen before with Poser figures and with M4, but rebooting the program or the computer would help for a while and it's not this time. CPU usage is around 5%.

Can anyone please help?