File : Assign randomly does not find the file

Hi everyone,

I am trying to use the Excel Basic package to load configuration data stored in the control room.

To have it clean, I open a File variable, and just before I assign to the File variable Bots/<my project name>/Params_v$@version$.xlsx ; where $@version$ is a global variable, so that I can have the same behaviour across several bots, and have a sort of version management.

Several bots have the same mechanism, I run them in a loop and it works correctly several times, until at some point it raises the error 

Get Resource failed. Error: Could not find the file 'Params_v0.2.xlsx?workspace=PRIVATE' at the Control Room path 'repository:///Automation%20Anywhere/Bots/<my projet name>/'. Check the file path and try again.

The file is quite obviously present, as I have loaded it perhaps one second ago. v0.2 is the correct version of the file, as stated in the global variables.

What can be the cause of the error ?