i've also noticed that satconv works if you're converting jap to us, but not euro to us. i think this has something to do with the fact that all the euro images i have were pr'lly jap or us to begin with and got satconved to euro.
There's no reason I can think of that would cause Satconv to not convert from Euro to US.
However, a problem could arise if a PAL optimized Euro game was run on a US or Japanese Saturn as it would overscan and run too fast.
