Booster has just released a new fix for corrupt game saves. Here is the google translation:
The case where the saving file and the like is broken, various measures it did. Trouble remaining at the time of MS cutting of USB connection and the like, it increases. 0.43 You think that it became better, but once it is positioning of test edition. Verification it increased the font transforming of the GTA saving picture and the page register processing of the RSS channel. As a load test, while changing ISO, while the web browser doing, suspention resumption severe = is optimum.