Script failed: no process in the command subtree has a signal handler

Script failed: no process in the command subtree has a signal handler

The problem I experience is with a basic script that should put the .exe file in the windows start up folder.
This script works with Google Chrome, but not with Mozilla Thunderbird, and the error I get is "Script failed: no process in the command subtree has a signal handler". The software has been installed correctly, and the script should be ran after the installation is done (post-installation).

The script I use:
Cd C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\
Echo start “C:\Program Files\Mozilla Thunderbird” thunderbird.exe > thunderbird_start_up.bat

I made both packages and configurations in the exact same way, and they have no difference other than the software being installed (Mozilla Thunderbird and Google Chrome respectively).

I tried looking on the forum, but it seems no info can be found regarding this error message, so I hope somebody can help me out.

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