I just tried to install a new KG-TangentCurve that is dependent on KG-ptnumOffset. This returns an error.
I was able to DL KG_curveTangent from the store. There was no error message. It's dependent, KG_ptNumOffset, is also there in the Asset browser.
I'm on win7. Adam is on Linux.
If you like, send me a file which uses this asset and I'll send you a screen shot of how it opens.