Please verify if you are using AcidWeb's Portable Launcher Utility. It is missing some flag files.
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Also, are you using a default start, or a custom empire?
I am able to reproduce this. I get error 75 twice, then it continues normally. Running Aurora under strace, I can see it access the following paths when it opens the galactic map:
c:/Program Files/Aurora/Flags/flag0000.jpg
c:/Program Files/Aurora/Flags/
c:/Program Files/Aurora/Flags/
c:/Program Files/Aurora/Flags/flag0081.jpg
c:/Program Files/Aurora/Flags/flag0161.jpg
c:/Program Files/Aurora/Flags/flag0068.jpg
c:/Program Files/Aurora/Flags/flag0028.jpg
c:/Program Files/Aurora/Flags/flag0060.jpg
Installing the flag files not in PU has no effect.
This is in a game with a custom race and non-sol start. I had a little trouble with empire generation. I suspect either two borked attempts at empire generation left some remnants in the database, or NPC's can somehow be assigned "" as the flag file name. My normal start game does not exhibit this problem.
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