MIchael,
first check the Autoslew manual (page 20 - English version) regarding "Ignore futher slews in Pointing files" - it should be checked.
Then check the helpfile in Maxim - Telescope tab, the heading is Auto-Center: There are three different ways of calibrating so that Maxim know in which direction and how much to move the mount (the most accurate being a plate solve using pinpoint, but there are two other methods).
And remember to have your mount connected under the Observatory window.
BR Matts