Apps still installed but lost by system

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http://forum.xda-developers.com – I have several apps installed on my HTC One V's SD card. However, the system has lost track of them, I can't start them. In the apps section of the settings they are listed according to their ID, like com.vendor.appname and are shown to be on the SD card. How can I get the system to re-register these? Bye, Andreas (HowTos)