Hi there!
We would like to ask you a favor to please start another thread for this problem because it is not related to the well-known issue of 64-bit processes being unable to load 32-bit DLLs, which is what this thread focuses on? In the new thread, if you could provide steps to reproduce the problem, including what you do, and what error messages you get, we might be able to help.
Take a look at
this thread discussing how UAC affects MSIs built with VS 2005 and how to work around it.
For the issue with Cassini quitting after being started, please try right-clicking the BAT and running it as administrator as see if that helps. If it does, rename the BAT so that its name would include "setup" or "install", which will make Vista and Win 7 to run it in administrative mode.
Please let us know if this information has helped.
Best regards,
UltiDev Team.
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