User blog:Dr. Ivo Robotnik/Please help.World saving problems?

So, it's been four months or so since I played on my tekkit world and it's been some days since I noticed that my world won't save data such as items stored in alchemical bags, items burnt/put in tablets, statistics (wich are always reset after a day or so).What is the cause of this and, in a broader way, what is there to be done?