Whenever a program has been working as expected, and then it "changes" and misbehaves, then your digital copy on the hard drive has been damaged. Each time it is loaded into Memory to run, it is no longer the same program that was originally installed. Another possible explanation is your computer's Memory is failing, and when Hoster loads into Memory to run it is damaged as the Memory bits won't store the 1's and 0's correctly... changing the program like a Virus can.
Reinstall Hoster, first REMOVING it, then INSTALLING the version. This is the best way to clear up problems. You should have the Hoster installation file that was provided to you originally when you ordered, or if you have downloaded an upgrade that we provided to you.