have you tried checking the "perform full file check" box? or can you get to it.
Can't. As soon as the popup window with the error, it locks you out of the patch screen. Then when you hit "ok" the client closes.
[2021/09/22 13:42:19] Failed to load module [http]
[2021/09/22 13:42:19] libpatchclient initialized.
[2021/09/22 13:42:19] Currently running as [G:\yaddayadda\uo.exe]
[2021/09/22 13:42:19] Currently running as [G:\yaddayadda\uo.exe]
[2021/09/22 13:42:19] Notification of restart with alternate filename
[2021/09/22 13:42:19] Failed to load module [http]
[2021/09/22 13:42:19] libpatchclient initialized.
[2021/09/22 13:42:19] Currently running as [G:\yaddayadda\uo.bin]
[2021/09/22 13:42:20] Nothing to patch for [EAMythic Patcher]
[2021/09/22 13:42:20] Patch size is 117233777
[2021/09/22 13:42:20] MYP::OpenMypArchive Failed to create file [artLegacyMUL.uop].
[2021/09/22 13:42:20] Failed to process pack [artLegacyMUL.uop].
[2021/09/22 13:42:20] Failed to update packed files for [uo-legacyrelease.prod].
[2021/09/22 13:42:20] Failed to patch stage [main].
[2021/09/22 13:42:20] Failed to patch main product.