sigil stone problem, durability Options

[myamota]

have any 1 else had problems with sigil stones? or do they have a limited use?
cause after i died and reloaded my game all my items that were enchanted with sigil stones had dissapeared. dont know if this is a common problem,but if any1 knows an solution to this problem i would like to hear it. thx in advance!

[Peterklogborg]

I looked further into it and the bug appears in the mage guild quest line-
Vahtacens secret - in area that is reviled after you cracked the pillor "fire,frost,destroy mana, fortify mana quest" it goes buggy somewhere between the first room and the fall-trap and even more buggy after the fall-trap...
To avoyided this error dont do this quest
to fix it download my 3 saves from www.theklogg.com/saves.zip analyse what happens and make an unofficial patch - i can't do this - it is beond my skill

so dear myamota, load the game before you did this and continue without doing more mage quests, I dont know why this bug appears -played oblivion a lot and this is the first time i see it. But its also the first time I play the expanson [shivering isle]...