After two days of extensive research on my problem with the "Sync Error"
message and the weird problems comming from it, I've found at least the
problem on my network.
I've tested more or less all the IPX params in the files without luck and I
new my network was in good shape so it had to be something else.
I changed the screen resolutions so they where the same on both machines and
it no problem anymore.
damn...
Hope it works for you too :-)
Cya,
Hans-Otto