Hello. Been running IDE 2.1.0 on desktop and Laptop. Exact same sketches on both (Arduino Uno 3). Yesterday ran the Desktop, IDE says Update to 2.1.1 available. I ran the update, and also updated the libraries. After the updates, my sketch (code) would Upload okay from the Desktop. The code S…

[image] pilotwoody: Arduino 1.6.9 Really ? Is this the IDE or something else ?

I just cant figure this one out. Been Uploading and running this exact same code, from both the Laptop and the Desktop, to several different Uno boards, for six months. Never had an issue. I even use the same USB cable. I did that update to IDE 2.1.1 on the Desktop, as well as updating the Librari…

Hi @pilotwoody . I'm going to ask you to post some additional information that might help us to identify the problem. :exclamation: NOTE: These instructions will not solve the problem. They are only intended to gather more information about the problem. Please do this: Start Arduino IDE 2.x on …

Arduino IDE 2.1.0 VerifyCompile DESKTOP.txt (10.9 KB)

Arduino 1.6.9 VerifyCompile DESKTOP.txt (24.7 KB)

UPDATE. I wanted to play with the failing code to see if I could identify where it was stopping. I had the failing code (MyCode) open in IDE 2.1.0. Did a Save_As and gave it a new name MyCode_TEST. That saved it as a new sketch. Closed the original sketch (MyCode). Opened the new sketch (MyCod…

Thanks for the output. I had a hypothesis that the cause of the different results between the two machines might be that different dependencies were being used from one computer to the other. But after looking at the output it actually appears that the dependencies are identical. And anyway, you mo…

Hi. Deleted the compilation cache folder for MyCode as requested. Opened IDE 2.1.0. Opened MyCode sketch. Uploaded........ Back to normal, code is now running fine again! Thanks so much for your help with this problem. If there is anything further you need from me, just let me know. Thanks a…

You are welcome. I'm glad that the "MyCode" sketch is back to a working state again. Regards, Per

Arduino IDE 2.1.1 ?

Development Tools IDE 2.x

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Arduino IDE 2.1.1 ?

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