Hi, you can try installing an upgrade over the open source version which I think should probably solve your issue - I haven't tried it myself as I bought DBP so have had no need to so far. I read somewhere that you can install upgrades over the open source version so I assuming that it will work, plus I tested to see if the compiler is overwritten when applying U7.7RC7 some years ago, which it did iirc. You can find the upgrade
HERE
Edit: For the purpose of clarification, the open source version is not the latest version of DBP, I believe Lee had to roll back to version 7.1 or might have been 7.5 for the open source version as the aim was for a faster compiler - I can not speculate as to the exact reason(s) why. By installing the upgrade I linked to, the compiler will no longer be the faster version - again assuming that installing the upgrade works(you may have to guide the installer to the open source version if it isn't installed in the expected directory that the installer is defaulted to).