So I've been trying to download the Expanding Fronts Mod for Galactic Battlegrounds on Voobly but I stumbled into a problem, the mod is split into 3 parts and only one of them downloaded succesfully (EF EXE Patch), the other 2 crash voobly when the process reaches 99%, any idea of why this could be the case?

Close Voobly and go to your Game Directory and delete all Voobly Mods you have downloaded.

<game folder>\Voobly Mods\SWGB\Data Mods\*.*
<game folder>\Voobly Mods\SWGB\Local Mods\*.*
<game folder>\Voobly Mods\SWGB\Patches\*.*

Then restart Voobly and enter a lobby. Now attempt to download those three mods again and for the download to complete before clicking anything.

Does it work now?

Yes, it does, thanks for the help, initially it froze again and I thought it was going to crash again, but this time I checked the folder and saw that everything was slowly appearing, so I waited and it finished the installation.

Glad to hear it's working again. Have fun on Voobly.