This could be a game that doesn't playback well or only plays back with special settings (no sound or frameskip=0). However, my guess is It's most likely the nvram issue. For ease, just delete the nvram directory from mame each time you install it, and playbacks will work more.(posted 8574 days ago)I'm guessing this was the first time you played/recorded klax, thus you didn't have a nvram/klax.nv file. next you make your recording with no nvram file. Then you finish the recording, the nvram/klax.nv file gets created by mame when the recording is done. Next you try and playback the inp (which was recorded with no nv file) while the klax.nv is in the nvram dir and thus you are not playing back the recording in the state it was played back.
Of courser if this isn't the first time you played the game, this sceneario was possible. Nvram/klax.nv #1 existed before you recored. You start recording and finish you 98k recording, thus changing Nvram/klax.nv #2 and when you go back to play your inp it reads #2 when it really wanted #1 to playback correctly.
At any rate i was able to playback the Gary's recording to 963120 but with a defalt created nvram (not one deleted) which means you have to upload the nvram file you had before you started recording to play it back (if you don't want to just delete the nvram directory that is...)
aint playing back fun? not.