i downloaded this mod and test it first and it worked. In the Replay View Folder there is a file named: 2015_12_23_01_30.mcpr
Everything worked fine so I started my next recordings. But the new recordings dont show up in Replay Viewer. In the Folder there is a file named: 2015_12_23_02_15.tmcpr
I play on a server and I exited Minecraft with Disconnect button. I made over 20 recordings now and it's feel like a 50%-50% chance of "only quit without the Mod-Saving-Message" and quit with the normal mod-Saving-Message.
I dont know why it sometimes just dont save the game session :(
Unless there are any errors in the console, we can't really help you there.
Is there any way to convert .tmcpr back to .mcpr?
Not yet, but I may add a way to restore .tmcpr files that are a result of incorrectly exiting Minecraft.
Having this problem as well, I am correctly exiting the minecraft server and I am unable to replay the game I was just in.. Checking my replay folder to see TMCPR files and they just disappear once I close my client down