This issue normally indicates an error with the devices firmware. Have you installed any applications or themes recently? To resolve this error you need to remove and recently added programs or reload the device firmware. To reload the firmware you need to download the latest Telstra firmware using the link below, then using Desktop Manager run Application loader and install the updated firmware.
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Telstra BlackBerry 8700 Handheld Software v4.2.1.141 (English/Chinese)
Package Version: 4.2.1.141
Consisting of:
- Applications: 4.2.1.91
- Software Platform: 2.3.0.76
- File name: 8700C_PBr4.2.1_rel141_PL2.3.0.76_A4.2.1.91_Telstra .exe
- File size: 56.19MB
Note: The Software Platform and Applications version numbers can be found under Options-About screen on the handheld.