Error while compiling the LCDbasics exemple

While compiling the LCDbasics program from the list of exemples provided with the Rom32U4 library, I receive the following message : “Erreur durant le téléchargement de
and : “unable to rename ‘C:\Users\bruch\AppData\Local\Temp\arduino_build_180865\core\core.a’; reason: File exists”
The first message seems to show an error in the name of a file (aeduino instead of arduino)…

How to solve this problem ?

Thanks in advance


You might have mistyped the URL in the “Additional Boards Manager URLs” text box of your Arduino IDE. Can you open the Preferences dialog in your Arduino IDE and verify that you copied and pasted the correct URL as described in step 2 under the “Programming using the Arduino IDE” section of the Romi 32U4 Control Board User’s Guide?

- Amanda

Thanks a lot for your answer, Amanda…
I spent a part of the night on the issue and I managed to solve the problem : it was coming from a bad download of the a-star driver.
I downloaded it again and the problem was fixed…
(It took me time to understand how to update a driver under Windows 10… )

Thanks again !