How can I be able to upload compiled code to my controller one day

How can I be able to upload compiled code to my controller one day and receive error codes the next? I uploaded Marlin successfully yesterday, but today it says “error compiling for Mega2560. Everything is the same. …frustrating…

Completion isn’t always clean. Yesterday there could have been a changed file that the preprocessor skipped (perhaps with a bad time stamp) which SHOULD have broken the compile.

When in doubt, clean before make.

Kathleen Johnson is a spam account so I banned and removed her (plus removed the comments related to that convo so you don’t get spammed by giving your email out)

@Justin_Nesselrotte yes, I immediately thought she was a) porn girl b) scam artist c)trying to sell me something or d) needing to see the code to troubleshoot my problem.