Hi,

One of the players who have purchased my game can't donwload the game from the itch app in Ubuntu 20.10. I can't either with Ubuntu 16.

Downloading from the webpage, there are no problems.

It seems to be related to butler, but I have never used butler to upload my game, and it's just 1 executable file.

Below is the error my customer is having (the error I'm getting is almost the same).

Thanks in advance.

On Ubuntu 20.10 I get the following error for both demo and full version: Following is taken from the itch app log:

{"time":1613990952244,"level":30,"msg":"(opening file took 195.338557ms)","name":"m/reac/down/driver"} {"time":1613990952244,"level":30,"msg":"Determining source information...","name":"m/reac/down/driver"} {"time":1613990952244,"level":30,"msg":"↝ For source (TrackMaster_0.1.1.x86_64)","name":"m/reac/down/driver"} {"time":1613990952244,"level":40,"msg":"  No mapping for file extension (.x86_64)","name":"m/reac/down/driver"} {"time":1613990952244,"level":30,"msg":"Estimated disk usage (accuracy: guess)","name":"m/reac/down/driver"} {"time":1613990952244,"level":30,"msg":"  ✓ 747.78 MiB needed free space","name":"m/reac/down/driver"} {"time":1613990952244,"level":30,"msg":"  ✓ 422.66 MiB final disk usage","name":"m/reac/down/driver"} {"time":1613990952250,"level":30,"msg":"Will use installer unknown","name":"m/reac/down/driver"} {"time":1613990952254,"level":50,"msg":"No manager for installer unknown\ngithub.com/itchio/butler/cmd/operate.doInstallPerformInner.func1\n\t/builds/itchio/butler/cmd/operate/install_perform.go:266\ngithub.com/itchio/butler/cmd/operate.InstallPrepare\n\t/builds/itchio/butler/cmd/operate/install_prepare.go:264\ngithub.com/itchio/butler/cmd/operate.doInstallPerformInner\n\t/builds/itchio/butler/cmd/operate/install_perform.go:202\ngithub.com/itchio/butler/cmd/operate.doInstallPerform\n\t/builds/itchio/butler/cmd/operate/install_perform.go:137\ngithub.com/itchio/butler/cmd/operate.InstallPerform\n\t/builds/itchio/butler/cmd/operate/install_perform.go:40\ngithub.com/itchio/butler/endpoints/downloads.performOne.func8\n\t/builds/itchio/butler/endpoints/downloads/downloads_drive.go:331\ngithub.com/itchio/butler/endpoints/downloads.performOne\n\t/builds/itchio/butler/endpoints/downloads/downloads_drive.go:336\ngithub.com/itchio/butler/endpoints/downloads.DownloadsDrive\n\t/builds/itchio/butler/endpoints/downloads/downloads_drive.go:76\ngithub.com/itchio/butler/butlerd/messages.(*DownloadsDriveType).Register.func1\n\t/builds/itchio/butler/butlerd/messages/messages.go:2582\ngithub.com/itchio/butler/butlerd.(*Router).HandleRequest.func2\n\t/builds/itchio/butler/butlerd/router.go:306\ngithub.com/itchio/butler/butlerd.(*Router).HandleRequest\n\t/builds/itchio/butler/butlerd/router.go:315\ngithub.com/itchio/butler/butlerd.(*gatedHandler).HandleRequest\n\t/builds/itchio/butler/butlerd/butlerd.go:159\ngithub.com/itchio/butler/butlerd/jsonrpc2.(*connImpl).handleIncomingMessage.func1\n\t/builds/itchio/butler/butlerd/jsonrpc2/jsonrpc2.go:250\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1373","name":"m/reac/down/driver"} {"time":1613990952254,"level":40,"msg":"Download errored: No manager for installer unknown\ngithub.com/itchio/butler/cmd/operate.doInstallPerformInner.func1\n\t/builds/itchio/butler/cmd/operate/install_perform.go:266\ngithub.com/itchio/butler/cmd/operate.InstallPrepare\n\t/builds/itchio/butler/cmd/operate/install_prepare.go:264\ngithub.com/itchio/butler/cmd/operate.doInstallPerformInner\n\t/builds/itchio/butler/cmd/operate/install_perform.go:202\ngithub.com/itchio/butler/cmd/operate.doInstallPerform\n\t/builds/itchio/butler/cmd/operate/install_perform.go:137\ngithub.com/itchio/butler/cmd/operate.InstallPerform\n\t/builds/itchio/butler/cmd/operate/install_perform.go:40\ngithub.com/itchio/butler/endpoints/downloads.performOne.func8\n\t/builds/itchio/butler/endpoints/downloads/downloads_drive.go:331\ngithub.com/itchio/butler/endpoints/downloads.performOne\n\t/builds/itchio/butler/endpoints/downloads/downloads_drive.go:336\ngithub.com/itchio/butler/endpoints/downloads.DownloadsDrive\n\t/builds/itchio/butler/endpoints/downloads/downloads_drive.go:76\ngithub.com/itchio/butler/butlerd/messages.(*DownloadsDriveType).Register.func1\n\t/builds/itchio/butler/butlerd/messages/messages.go:2582\ngithub.com/itchio/butler/butlerd.(*Router).HandleRequest.func2\n\t/builds/itchio/butler/butlerd/router.go:306\ngithub.com/itchio/butler/butlerd.(*Router).HandleRequest\n\t/builds/itchio/butler/butlerd/router.go:315\ngithub.com/itchio/butler/butlerd.(*gatedHandler).HandleRequest\n\t/builds/itchio/butler/butlerd/butlerd.go:159\ngithub.com/itchio/butler/butlerd/jsonrpc2.(*connImpl).handleIncomingMessage.func1\n\t/builds/itchio/butler/butlerd/jsonrpc2/jsonrpc2.go:250\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1373\ngithub.com/itchio/butler/cmd/operate.InstallPerform\n\t/builds/itchio/butler/cmd/operate/install_perform.go:43\ngithub.com/itchio/butler/endpoints/downloads.performOne.func8\n\t/builds/itchio/butler/endpoints/downloads/downloads_drive.go:331\ngithub.com/itchio/butler/endpoints/downloads.performOne\n\t/builds/itchio/butler/endpoints/downloads/downloads_drive.go:336\ngithub.com/itchio/butler/endpoints/downloads.DownloadsDrive\n\t/builds/itchio/butler/endpoints/downloads/downloads_drive.go:76\ngithub.com/itchio/butler/butlerd/messages.(*DownloadsDriveType).Register.func1\n\t/builds/itchio/butler/butlerd/messages/messages.go:2582\ngithub.com/itchio/butler/butlerd.(*Router).HandleRequest.func2\n\t/builds/itchio/butler/butlerd/router.go:306\ngithub.com/itchio/butler/butlerd.(*Router).HandleRequest\n\t/builds/itchio/butler/butlerd/router.go:315\ngithub.com/itchio/butler/butlerd.(*gatedHandler).HandleRequest\n\t/builds/itchio/butler/butlerd/butlerd.go:159\ngithub.com/itchio/butler/butlerd/jsonrpc2.(*connImpl).handleIncomingMessage.func1\n\t/builds/itchio/butler/butlerd/jsonrpc2/jsonrpc2.go:250\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1373","name":"m/reac/down/driver"}