I am using openSuSE 10.3 linux. Tried many things to get a fixed twonkyvision-mediaserver.ini file, not to loose the registration information i.e. by just starting and stopping the server (sometimes not always):
* making the file readonly
* restoring a backup copy before starting the server
Result: No success
After starting the server the *.ini file is in place, read-write and has the key information. In spite of this the server says: .... period expired