[awacs]

Možda ti ovo pomogne:

There is a Windows issue when you have too many instances of MIDI on your computer. This happens if you do not use the same MIDI ports for your connections (that is, remain consistent). In order to make USB on the computer bulletproof (sic) each time you plug a device into a different port the operating system (Windows) reinstalls the driver. When you reach 10, you can install no more.

Here is a quote from our Yamaha support department
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This seems like the problem that happens when the number of MIDI devices has been exceeded in the windows registry.
Unfortunately windows installs a registry entry every time you connect a new device or reconnect an existing device to a different port.
The result is that the registry slots are all used and the new driver will not install...it seems like it does, but it doesn’t work...sound familiar?
Here is the fix. Its not too hard but it takes digging into the registry.

Via ‘Start/Run’, the registry editor can be started by typing in ‘Regedit’. The relevant entries are in the path ‘HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Window s NT\CurrentVersion\Drivers32’ (left part of the window). In the right pane you will see the installed MIDI device driver entries (scroll down). If there is an error/problem, and all 10 entries for MIDI (midi to midi9) have already been created, duplicates can be safely deleted to allow room for the new driver entries.

To be absolutely safe, create a restore point before you launch Regedit. Also remember to save the changes in Regedit when you free up the midi entries.
Once you have freed up an entry, the USB driver will properly install and show up in all the places that have been missing previously.

Neki moj poznanik je skoro imao sličan problem, pa mu je pomoglo.

Pozdrav,

Vasa