The control panel freezes the system.
I poked around with Resourcerer and all copies of 1.2 seem corrupt. Many resources report being gigabytes in size which is likely what causes the lockups (I have the same problem).
Similarly to you, I switched to an earlier version (1.1), which has normal-looking resources and runs just fine.
Don't know if anyone has a clean copy, but both of the ones I found on the garden show the same damage.
Alternatively, its possible the Daystar version of the panel works fine, because they're both the same Storm accelerators with different branding.