Problem with Premessa Panel Editor

[kilejonez]

I recently updated to R version 4.1.0. After using the premessa panel editor GUI, I am able to see my CyTOF panel and make edits as I have done in the past. It also appears that after processing, new .fcs files are created in the "renamed" folder that I designated in the GUI. However, when I try to perform clara clustering in Scaffold (the version from the Spitzer Lab), it freezes up and R shows an error message (see first screen shot). Thinking that this was just an issue with the Scaffold program, I tried to open the re-named files in the premessa panel editor GUI; however, I am unable to open up the re-named files and receive a similar error message about a subscript out of bounds (see second screen shot). I'm not sure if I'm doing something wrong, but any help you could provide would be greatly appreciated. I've attached the info. from my R-session in Rstudio. Please let me know if there is any additional information that you need.

Thanks,

Kyle