Makes sense. FYI, according to ActionBlocked GMail tries to perform PickupContainerItem() which causes the error when disenchanting. Disabling GMail (and only GMail) fixed the problem. I only receive the error on my disenchanting character, however.
I mention this in case it helps someone figure out a workaround until Blizzard fixes whatever bug causes this.
well PickupContainerItem() is securehooked, shouldnt be any issues :s and btw if you tryed ct_mailmod you have same issues i presume (since code is more or less same)?
@Devla: ohh never using alt+click so i didnt even notice it doesnt work ;> anyway was playing a bit today (with modifyed click) and had some problems alt+click in trade worked, in sendmail worked.... but it didnt work in to massmail no idea why ;( and for some reason draging items also stoped working.... well ill try to figure out more tomorrow...
since i really missed this function i just added it to my "local" version with my pro copy/past skills ;) anyway when i check if it works as it should ill post patch in an hour or so and hope someone will update SVN ;>