Most likely the problem is that the cache file isn't working properly. The cache file fixed the problem where maps with more than 10 data points could stop working because of too many geocache calls. I think you actually need to figure out how to get the cache file working and not how to disable it.
Were you not able to find it? My bet is that it can't create it because of permissions. I'd create the cache file in the proper location manually so that it can start working. I'll bet that will fix the issue.