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You must only run the donor client with your donor account. Use the alt manager for non-donor alts
Please send your crash log from .minecraft/logs/latest.log (https://paste.ee)
Can you explain?
If you mean the text, it could be due to language or texture pack
Do you have tlauncher installed? because when I ran a outdated version it made my normal minecraft pop that error up but i can run it with tlaunchers new version but only on tlauncher so try that i guess if not you will have to reinstall mincraft
https://discuss.aristois.net/topic/515/stripe-faq-and-concerns-donation
