found on the web - thought I would share...

1.download file- then open in ifile 
2.unarchive the file then copy/link tapped out.
 3.Go to var/mobile/applications/tapped out/tapped out release row.app
 4.Edit then paste the file in and click overwrite.
 5.Look for the tapped out file and click the blue arrow(still in the tapped out release section)
 6.Change this section to this User-Read, Write, Execute. Group-Read, Write, Execute. World-Read, Execute.
 7.Respring your device and then go on tapped out and place a tree and you have done it