Illegal parameter and have no idea where to look or what to do.

[frnknstn518]

i have everything updated to 3.5.1. this happens when i try to upload to print.

[oliof]

@frnknstn518 my best guess is that you are using startup macros written for Klipper since they have names like DO_THING_OR_OTHER. But we can only be sure if you share at least the first couple dozen lines of your gcode file.

[frnknstn518]

@oliof here is some of the g code, hopefully this is what you need

[marvineer]

@frnknstn518 line 132 is where you should be looking. Try to comment it out like the other lines in green (put a semicolon in front) as it's not valid gcode for rrf.
It should work nevertheless, because M109/M190 are the right commands to set temps the lines before.

[Phaedrux]

What slicer are you using? Have you set it to RepRap gcode flavour?