Daniel: Excellent call!! We just found this out ourselves earlier this week. Here's the official resposne I'm passing around, for anyone reading this thread.
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We've found potential for the latest beta of IconPackager3 to interfere with ObjectDock, causing ObjectDock to not be able to drag, and in some cases not even start up correctly. This will be fixed in the next IconPackager release, but before that happens I have also worked around the interference in the next upcoming ObjectDock release.
In the mean time, you can try unregistering a helper dll IP3 uses, note it may cause a small degree of handicap within IP3 but both programs will continue to work. You'll need to reinstall IP3 to undo this temporary workaround.
From your run dialog, enter this exact command and press enter:
regsvr32 /u "iprepair.dll"
(if it complains about the not finding the exact path of iprepair.dll, search for it on your harddrive and replace that relative dll path with the full path)
Rebooting is necessary after unregistering the file to have ObjectDock resume correct function.
I was able to fully reproduce this problem, so give that a shot and it should help. Let me know how it goes.
Thanks,
-Jeff Bargmann
ObjectDock Developer