Hey all :)
I've got a single user, using both Windows 7 and Apple iOS, who is getting "dpl tag unrecognised" errors left and right. I've had her clear cache, turn off the devices and turn them back on again (giggle), show me that DPL does appear to her to be installed at tardis:Special:Version.
I can't reproduce her errors at all, and no one else is reporting any difficulty with DPL. Anyone ever heard of a DPL error that's account-specific?