This whole Houdini trip is just too BIZARRE!
v1.5 is a TOTAL DISASTER! (v1.4.4 worked ok) I, too, am getting the, "the variable zerothoptions is not defined" on my desktop. Earlier, upon launch, a window appeared with a list of applications, the first twenty or so were blank and the rest were a combination of applications and none-applications, most in triplicate, quadruplicate and more. Huh???
Oh, and at the top of the window it said, "Where is Microsoft Word?"? WTF??!! I don't even have Microsoft Word installed.
Question: Do you, developer(s) know wtf your doing???
I think not.
Why don't you just toss this Houdini thing into the trash, go take your meds, take a nice warm bath and then have a really nice long nap, ok? You'll feel much better.