I attempted to configure a spare Aero 1550 for Parowan and got into a
major nightmare with all 3 of my PDA's unable to run GNII. The
program hung with the "loading files" message displayed. The problem
grew exponentially as I transfered CF cards between PDA's. After
tearing out most of my hair I deleted the TP Exchange SUA file was
able to get all 3 working again.

I then created my own airspace file from JustSoar with GNII option
selected and all 3 PDA are still working. I don't have time to run an
exhaustive test and I'm going to quit while I'm ahead, but if you are
going to Parowan and having problems with GNII try deleting the
Parowan SUA file.

Andy GY