Erroneous memory full message

try thishttp://kb.sandisk.com/app/answers/detail/a_id/1102/kw/card%20is%20locked

Most SD memory cards have a tiny slide switch on the edge of the card. Move this slide switch from Read to Write to turn off the write protection.

1) Connect your e250 to your PC.

2) Open up "My Computer".

3) Look for your e250 in the list under My Computer, then double-click on it.

4) If you see something called "Internal Memory", double-click on that.

5) You should see a folder called "Music" ... double-click on that.

6) You'll find your music under the "Music" folder ... delete it using Windows Explorer.

Hello,

Troubleshooting page for the e200 series coming up with the message
"free up" memory:
http://kb.sandisk.com/app/answers/detail/a_id/848

Changing USB mode can be used for showing the players' content on the computer in MSC mode:
http://kb.sandisk.com/app/answers/detail/a_id/447

How to change to MSC mode, see next page:
http://kb.sandisk.com/app/answers/detail/a_id/61


When files on the player are corrupted, a format of the player should be performed in:
1. MSC mode:
http://kb.sandisk.com/app/answers/detail/a_id/107
or
2. MTP mode:
http://kb.sandisk.com/app/answers/detail/a_id/444
Note: when formatting the player, all files will be erased.

Need more help ? Just post a comment.

you e rased other file if you have added other file

Re-format it. Put the SanDisk 2GB microSD memory card into your LG enV2 and format it from there. If that does not work plug it into your laptop then right click the icon and format it to FAT and click on default settings.

is there a charger (cord plugged into the base) plugged in?

I cannot open my disk by explore file

- As with nearly ALL sansa e250 problems, formating it will bring it back to normal. 1. Connect it to your computer. 2. Open 'My Computer' and right-click the device. 3. choose 'format...' and then 'quick format'. 4. If you haven't done so, upgrade the firmware: -Find the firmware on the Sandisk home page. Don't use the wrong one, though. If you have a Rhapsody version, choose the e200r player. Download the .zip file and extract its contents (right-click, 'extract all'). Then connect your player to your computer and drag the extracted file to your player's drive. Now when you turn your player on, it'll undergo the firmware update. You can also update your firmware by connecting to Rhapsody with your player hooked up and following the firmware update instructions when the window comes up. If the firmware update window doesn't appear, then you have the latest firmware to date. 5. Test out the player and see if this method worked. If not, you may want to send it back sandisk or return to the retailer you bought it from.

it might be because the media player try using a diferent media player or buy an sd card and put music in it it reads it just fine and you can use the internal memory for videos only hope it helps.