I've bought the gum-tex powder and it has a pull tab. I've never bought the mix though, just straight gum-tex.
The can opener sounds like a plan, though 
Gotta get it open somehow.
I am a WMI and never gave it any thought about the pull tab thing, I just cuss at it while trying to get it open with the can opener.
I will relay this info to Wilton and ask for a pull tab opening on the gumpaste can.
There is a small silver pull tab on the can of Wilton gumpaste mix. It blends in with the rest of the top. You should be able to spot it once you pull the plastic cover off.
Oh my goodness, I searched and searched and searched for that dang pull tab, but it never showed up 
I used a can opener, and it left little pieces (like dust almost) of the can on top of the powder mix. But I have a Pampered Chef can opener so it doesn't cut the metal, it pulls all the metal off.
Anyway, it's nice to know I'm not the only one to stare blankly at this can for a while...
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