Error using xtregfem

#1
Hey guys.

I've been trying to run a user-written program to do a ridge and weighted fixed effects panel data regression called xtregfem but I can't get it to work. What I do is:

*******example*******

xtregfem hea gdpln postin labforfem, id(country) it(year)


******example end*******

But I get error:

matsize too small to create a [480,1] matrix


I've tried to set the matsize higher (since I run STATA I/C, the limit is 800), but I get the same error. Is there any way to do ridged panel data regression without this error popping up? And do I really need to upgrade to run this regression?

Second thing; do you guys know if there are ANY other options running fixed effects panel data regression with ridge?