Corrupted Project and Keyword Test variables

Cross post from the other thread on this issue;

https://community.smartbear.com/t5/TestComplete-Questions/TestComplete-v15-56-software-saving-string-variables-with-Base64/m-p/259472/highlight/true#M112787

TLDR - "On another note some initial testing of v15.57 on my side, it seems the Base64 encoding issue might be gone, or at least I couldn't recreate it like before, but this was only a quick test I had.

We'll still be treading a bit carefully with the new version, with most testers sticking on v15.55 for now."