The error message translates to "The application AstraSync has tried to change your user data. But it contains a signature and could be from an untrusted source ". If you allow this? Yes / No ".
There is a known problem with OS 6.0 that can cause this OS security popup to appear repeatably if you are syncing contacts.
Firstly please check with your phone provider that you are running the latest OS available for your device. If not please upgrade this.
To resolve the popups we need to try resetting the contact collection. This will wipe all contacts off your phone and replace those with ONLY the ones that are on the server. Please therefore take a backup of your phone before attempting the next steps.
-From the device home screen go into 'Manage Connections' and turn off all connections. This is very important
-Go into the Contact list. Press Menu > Options. This will take you to 'Contact Options' page. Type in the letters 'RSET' without the quotes. You will not see anything as you type.
-You should get a warning "Wireless sync for default is not enabled, wipe contact list anyway?" Hit YES. This option will remove all the contacts from the phone.
-Reboot the phone (remove battery for a second then insert again).
-Once the phone is back up again ensure that all connections are still OFF
-Check the contact list, there should be 0 contacts
-Go into AstraSync, hitting yes to the prompts on startup
-Go into Menu > Options > Sync Setting. Uncheck the option for Contacts.
-Go into the main contact list and ensure there are no contacts. If there are contacts then there may be some other program that is writing the contacts in. Check for this and disable those programs.
-Go into Manage Connections and turn the network connection back on again.
-Go into AstraSync, Menu > Sync Status. Force a sync and ensure email/calendar (depending upon which collections you have enabled) sync okay. (Note: Contact option should still be off at this point.)
-Back on AstraSync Options, go into Sync Settings. Select 'Contacts' and save. The contacts should now sync back to the device.
If afterwards you are still seeing the popup on every sync then please let us know and we will have to investigate further
Vicky Cwilewicz
AstraSync Support
www.astrasync.com