I gotta be doing something wrong!

[printbus]

I think you said in another thread you just installed an e3dv6 hot end, right? Note that e3d recommends using as little retraction as possible. IIRC, they recommend 0.8mm retraction or less, saying the e3dv6 doesn't need much. Too much retraction can pull hot filament up into the heat break or worse yet, up into the PTFE tube if you're using 1.75mm filament.

FOLLOWUP COMMENT: I've had one or two situations with my e3dv6 where I initially couldn't pull the filament out after first warming up the hot end. Next time, try letting the hot end soak at temperature for a while - that might soften up any material above the block. In one of those cases, I couldn't pull the filament manually but was able to at least break it loose using the hobbed bolt and retraction commands. Sure I risked notching the filament with the retraction, but I figured I didn't have much to lose in trying.