Never seen it before nor have heard of it before nor have I imagined how you got here.
Before we dig in, are you running in Windows 7 or Vista? I'm smelling an O/S security bar here.
Is it possible that the assemblies are "locked"? Go to the assemblies that are in the installed directory and check their Properties (right-click on the dll file). Are you offered the opportunity to "Unlock" them? If so, press "Unlock" and try again.
Look at the IdeaBlade assemblies especially.
Is DevForce installed on the target machine? Does it make a difference? If so, check the assemblies in the GAC too.
I admit I'm fishing. Let us know if this is the answer ... and then we'll know where to look next to prevent it from happening.
If it isn't, we'll be asking you to send us your ClickOnce installer. Don't do that through the forum; please do that through IdeaBlade support.