This software is intended to make entire packs of mods available, not only for download but, properly installed in Minecraft with proper adjustments as well. A nice idea but,,,,
This morning I fired the launcher up and was asked if I wanted to update the launcher.
The launcher downloaded some files and restarted just fine as version 107.
I thought great! now to play FTB mod pack, I had previously downloaded and installed.
A dialog box asked if I wanted the FTB mod pack updated, I said yes.
A new dialog box showed 31mb plus downloading very slow.
When this was done instead of starting up Minecraft, a new dialog box came up downloading Minecraft files.
I thought, "What the hell?".
Next a vanilla Minecraft menu screen pops up, with no mods and no maps I had saved.
A careful look in the mod pack folder and backup files showed all mods and maps had been deleted.
Nobody, I know releases software to the public without some kind of testing on safe links first.
This is a really obvious error, the author Slowpoke should have caught before this update was made public.
I have backups I will use with MultiMC from now on and do my own updates.
I HIGHLY RECOMMEND you leave this software alone, or at least use lots and lots of renamed backups.