Error:
Info Downloading https://github.com/develsoftware/GMinerRelease/releases/download/1.34/gminer_1_34_minimal_windows64.zip
Warn Existing file hash doesn't match. Will re-download.
Warn File hash doesn't match. Removing file.
Info Downloading https://github.com/develsoftware/GMinerRelease/releases/download/1.34/gminer_1_34_minimal_windows64.zip
Warn Existing file hash doesn't match. Will re-download.
Warn File hash doesn't match. Removing file.
Apparently the developer has silently uploaded a newer version
You can edit /Miners/N-GMiner-1.34.json and update the SHA256 in to "FAF6BEE635DC830E22FE0978DE3680479544440422C2EE35D857F37757D726DC"
If you use git version, just "git pull" to get latest updates