GURPS Thaumatology 4e.gdf
[MODIFIERS]
<Magery 0>
Limited Colleges (%CollegesList%), -40%/-30%, round(up), upto(1), levelnames(,), group(Magery 0), page(Th24), formula(-10% * (5 – (%CollegesCost4% + %CollegesCost3% + %CollegesCost2% + %CollegesCost1%))), forceformula(yes),_

<Magery>
Limited Colleges (%CollegesList%), -40%/-30%, upto(1), levelnames(,), group(Magery), page(Th24), formula(-10% * (5 – (%CollegesCost4% + %CollegesCost3% + %CollegesCost2% + %CollegesCost1%))), forceformula(yes),_

In both of these, removed that % sign after -10 at the start of the formula().