2012 Custom environments

[Anonymous]

I am attempting to make my own custom environments from existing HDR images I have in my library. Here is my workflow so far (unsuccessful):

Open Technicon sample model
Open Environments and select Generic from the Misc section
Right click and select create new environment
Browse to HDR (which previews correctly)
Select "Create Environment"
It runs through the complete process and upon completion it crashes EVERY time.

No matter which HDR I choose the crashing result is the same.
Has anyone had any success using this function?

I can not upload the hdr I am trying to use. Any HDR I have tried crashes showcase though.

Thanks in advance,
Scott