QB Issue Resolution:

Yes. dmg files wrap the backup files and encrypt it for transfer over the internet. They are better in that you can also open them in the Finder.

Resolution for Issue 'When I backup my data files to MobileMe, they are .dmg files instead of .qbmb files. Is this something new in QB 2010 for Mac? Can you “restore” these files like the .qbmb files?' available: Yes (Solved).
Source: Intuit Community forum.

When I backup my data files to MobileMe, they are .dmg files instead of .qbmb files. Is this something new in QB 2010 for Mac? Can you “restore” these files like the .qbmb files?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for Quickbooks
Quickbooks Repair Pro will resolve it efficiently and affordably. Guaranteed resolution of your issue, or you pay nothing!

Error Recovery for Quickbooks [Canada]
E-Tech is the #1 Quickbooks data migration and Conversion service provider.

Get 50% off Quickbooks Online

Click Here for 50% off!

Additional Support Options: