1.4.7 modpacks (direwolf20pack) give me an error

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Qruze

New Member
Jan 13, 2021
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Hello! I'm trying to play Direwolf20 1.4.7 for nostalgia, but when i launch it the game output gives me: Error: Could not find or load main class Myname\AppData\Local\.ftba\instances\0825f142-1efe-4a35-846f-869f0a4f4e98. I checked the location and its there. I also tried another 1.4.7 modpack and had the same problem. Any help would be much appreciated. Kinda a noob at this sort of stuf :p.