To reproduce:
- download a challenge - I chose “No shields, No problem” (name possibly not exact)
- click Fight
- save deployment - immediate lock-up, requires forced termination from Windows
OS
Windows 7 Ultimate x64
Intel Core 2 Duo
nVidia Geforce 8800 Ultra GTX
2 GB of RAM
I should note that I have no problem saving my deployments in “Battle” mode thus far.