OMG! I had exactly the same problem from a similar task! I spent 2
hours on the phone with AT&T, thinking the problem was with my
voicemail setup. Every time I tried dialing it, it would forward to my
home landline. The next day, every call I made was forwarded to my
home number with exactly the same text but without any Tasker icon.
Basically, my phone was useless. I did try the native phone dialer (I
usually use Dialer 1) with the same nasty result. It never occurred to
me that it was a Tasker problem because I had completely deleted the
entire profile also. The only way I could solve it was to revert to a
Nandroid backup, which I must have made before I made that Tasker
profile.
You have solved the mystery that has been bugging me for weeks!
Thanks.