Issue With Upgrading

By the title, you can see that I am having a very strange issue with upgrading certain things. For some reason, some upgrades won't let me buy them and the upgrade says i'm not the sufficient level for the upgrade, yet I am level 49. I recently bought the vampire DLC, which added the vampire ability (I am trying to buy the vampire ability). This also is bugging on some other upgrades in the same category in the upgrades menu. The mods I have installed are Gentlemen of Steelport, First person car driving camera, HD texture fix, and Shitface mod collection. Any Ideas?

[Edit]: Never mind about all this, I just realized that the mod collection and GoS are pretty much incompatible. Sorry.
 
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