When i try to view my pictures a memory error comes up.

This should do it - this comes from the manual Formatting will do what you want.

Formatting an SD Memory Card or Internal Memory This utility formats the internal memory (or memory card) and erases all stored images and data. 1. Press the button to turn on your ViviCam 3785. 2. Press the MODE button twice to enter [ ] Playback mode. Then press the button to enter the Playback menu. 3. Select [Delete] by using the / buttons, and press the button. 4. Select [Format ] by using the / buttons, and press the button. 5. If you want to format your SD memory card or the internal memory choose [OK] by pressing / buttons, then press the button to confirm.
To cancel the action, select [Cancel] instead.
[No Image] pops up after the SD memory card or internal memory has been formatted. Note:
Be sure the SD memory card is properly inserted into the camera before formatting it.
To format the internal memory, be sure to remove your SD memory card first.
Formatting will erase all information (even unrelated , non-camera data) from the memory/card.
For complete compatibility, be sure NOT to select FAT 32 as the file system when you format the SD card in your computer. Memory cards formatted in FAT 32 file system will not be recognized by this ViviCam 3785.

Are you try other usb port? then, it is your camera can functinally plug and play? if that camera came with software, try install first before use it.

try this driver:

Driver vivicam 3785

You can format the SD card in your ViviCam 3785.

This utility formats the internal memory (or memory card) and erases all stored images and data. Make sure your SD card is in the unlocked position.
1. Press the button to turn on your ViviCam 3785.
2. Press the MODE button twice to enter Playback mode. Then press
the button to enter the Playback menu.
3. Select [Delete] by using the up/down arrow buttons, and press the OK button.
4. Select [Format ] by using the up/down arrow buttons, and press the OK button.
5. If you want to format your SD memory card or the internal memory choose
[OK] by pressing up/down arrow buttons, then press the OK button to confirm.

To cancel the action, select [Cancel] instead.

[No Image] pops up after the SD memory card or internal memory
has been formatted.

If you need a manual for your camera you can download a free PDF at
http://www.retrevo.com/support/Vivitar-3785-Digital-Cameras-manual/id/200ag818/t/2/
Please rate this solution. Thanks.

Manual says that camera only supports up to 512MB. Just tried it with a 2GB card now--gives a "Card Full" error.

Most probably find a Vivitar Vivicam 3785 manual here. Just send them a search request.

try the memory card in a card reader and plug it into a computer. see if the computer can detect the card and the contents in it. if it does detect it then that means there is a problem with the camera not recognizing the card or files in it. if it does not detect it in the computer that means the memory card of the camera is the one having problems.

you can download the full manual free of charge at this link http://www.manualnguide.com/download/manual-guide/vivitar-vivicam-3785-digital
-camera-users-manual.html, then click view/download and it will download and open up in adobe as a .pdf file.

Might be that the card is too large/small for camera to recognize, or it is a newer type of memory. Look up the specs for camera and compare to stats of memory card.

your mega pix arent that great, get a new camera

I had the same problem but fixed it by following the camera's directions to re-format the SD memory. You will lose all pictures on the memory card so remember to first save your pictures to your computer. Good luck.