Error when saving in TunerPro

Hi, long time gearhead new to tuning. This weekend I made a benchtop harness and was able to successfully read my 411 PMC OS 12208322 and save the bin. However, when I try to save changes in TunerPro I get the following error
"One or more checksums could not be updated. Check checksum addressing, etc, for validity" When I open the bin back up, the changes that I made are saved. Do I need to worry about the checksum error?
Using bin from my stock 2001 6.0L/4L65e Yukon Denali XL.
Using and xdf I found on this site "Operating System 12208322 - 512Kb PCM - 2001 model year" I have tried a few other xdf's and I get the same error.

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Originally Posted by tgiacobbi

Hi, long time gearhead new to tuning. This weekend I made a benchtop harness and was able to successfully read my 411 PMC OS 12208322 and save the bin. However, when I try to save changes in TunerPro I get the following error
"One or more checksums could not be updated. Check checksum addressing, etc, for validity" When I open the bin back up, the changes that I made are saved. Do I need to worry about the checksum error?
Using bin from my stock 2001 6.0L/4L65e Yukon Denali XL.
Using and xdf I found on this site "Operating System 12208322 - 512Kb PCM - 2001 model year" I have tried a few other xdf's and I get the same error.

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Try using the attached XDF and checksum plugin. Make sure to copy the checksum plugin file to your "Plugins" folder.

Pulse_GTO I cannot thank you enough. It works perfectly now! Thank you!

I was having that same issue thanks for the info