I was just playing Ocarina of time with the Mupen64Plus plugin.  I wasn't very far (about the end of the first dungeon) and I hit F4 to load my last save (which was about a minute earlier),   But it took me back to the very beginning (after I was out of the house but before I even had the sword or shield).

I had saved and loaded a lot of times before that and I hadn't had any problem.  And after it happened, I turned the game off and tried hitting F4, that just took me to the beginning spot again.  Then I restarted my comp and it went to the same place.

It wasn't that big a deal as I wasn't very far but I am concerned that it will happen again.

Is there anything I did to cause this and is there anyway I can prevent it from happening again?  And if it does happen, is there any way to undo it (to get to the last actual save instead of the beginning)?

Thanks in advance for any help with this!

Click here, read the entire post but especially read paragraph 5.

Good luck with your gaming!

Thank you very much for your response (and all the work you've put into this stuff for us).

I was playing the game and I just lost stuff again.  I was so far in Ocarina of Time (past the Water Temple) and the pluggin shut down and when I restarted it, I was in the middle of the Forest Temple.  It was like a punch in the gut when I saw it.  

Anyways, I read your post and I really want to save back up files every few hours.  But I have a few questions about the instructions.   I went to the Start Menu and then to the Vizzed Retro Game Room.  But I can't find the folder called "Open Plugin Data".  I searched the files in the VRGR folder and in the sub folders but I couldn't find it.  Could it be called something else or is there a way to search for that folder?

Then once I do find that folder, what is this part: "the .msi syncs your user information with the site's data"

I'm not a computer expert but I can usually figure stuff out with a little help.  

Thanks again for the assistance with this!

And this is the passage I am having trouble with: 

From your Start Menu, navigate to the folder titled 'Vizzed Retro Game Room'. Once you've found it, find a folder called 'Open Plugin Data Folder', and click on it. After the .msi syncs your user information with the site's data, a new window should pop up with a folder labeled 'User'. That user number helps the website to identify that specific pc, NOT the user themselves. In other words, if you have save files on a computer in your living-room, and decide to play on a computer in your bedroom, the folder will be specific to that pc only. Therefore, you will not be able to access your files from a computer wherein they were not originally created. HOWEVER, there is a solution to this problem! Within your pc's user folder, there are folders for each specific emulator, of which contain another folder marked 'saves'. Inside that folder will be a file with the game's title and the file-type .sav, or some variation of a save file-type. Sometimes there may be several save files for one save state, so just  to be safe, make copies of both. Place those copies somewhere else on your computer as to not confuse the emulator