New LS1 Tuning Tool [Universal Patcher]

[prider]

Question on Universal Patcher, I'm in the Tuner section and found a 'show histogram' tool, however when I try to use it for one of my csv data logs I get an error stating,
"Error, frmHistogram line 188: Object reference not set to an instance of an object."

Any ideas why that error is coming up? Not sure if I'm not understanding something fully when setting it up, or...

Thanks, this software is awesome!

EDIT: I also get an error stating the same but line 89.