Mobile network is not available" error

I installed the Sandisk Memory Zone app on my Droid 3 and added Google Docs as an online storage location.  I can download from Google Docs just fine but I cannot upload ANYTHING from either my internal memory or phone storage without encountering the error "“Mobile network is not available” even though I have a very strong 3G signal and DO NOT have Wi-Fi enabled.

Am I missing something?

Thanks,

Try to check with Wifi again. If it works then maybe because your 3G connection has problems.

gta vice city for android