Problem(s) Encountered:

At 20:15 I tried to observe target, but suddenly slew error occurred. And changed tracking off.  I tried again at 20:45 but same error occurred.  At 20:45,target was RA=09:36:08.7, dec=65:10:54.9

Second slew error occurred at 01:08:58. Target's RA= 13:23:49.52, dec=65:41:48.2

Solution:

Were these targets well off to the east?  If so, this is likely a known issue that occasionally crops up when pointing in that region.Tested telescope motions today and all appears well currently.