Error Code 3 while installing MacPostFactor.

When installing MacPostFactor, the installer may report that an error has been detected but that it can't solve it by itself.

1. Open Disk Utility, located in /Applications/Utilities/ .
2. Select the disk where the volume you intend to upgrade resides. This usually starts with a number representing the total size of the disk.
   
   
   
    
3. Click the Partition tab.
   
    
4. Click and drag the resize corner of your intended install partition to make the size slightly smaller.
   
   The blue portion represents used data space. The partition only needs to be approximately 5GB or 6GB smaller than it was before resizing but it needs to be larger than the blue portion.
   
   Example
   
   Before:    After: 
    
5. Click Apply.
   
    
6. When the partition resizing is complete, quit Disk Utility and install MacPostFactor.
7. After the OS X installation is complete, you can use Disk Utility to resize the partition back to its original size by dragging the resize corner to make the partition as large as it was before.