These two documents may help you to understand and resolve the problems of VMs with snapshots.
-- Troubleshooting Virtual Machine snapshot problems
-- SnapVMX Documentation
Feedback always welcome.
If you have a problem with snapshots and need support, please call VMware support.
If you have questions about something unrelated with the topic presented here (VDR, PowerCLI, Workstation, ...) I suggest you find the appropiate forum in the VMware communities and post it there.
If you link the script/troubleshooting guide, please link to this post or the blog. The server hosting the docs may change, the blog will not.