Yes, no doubt it is a good tool to use. And as you point out, it has a linux ISO bootable image in the free version that can be used to backup even a drive that might not be bootable on it's own.
The issue (I think) is what content is now packaged in the free tool version, but maybe more important, how it is packaged. Note that the last version of the script (v13) was only tested on the 4.5 version, and even then I recommended the eaelier version since they had moved more things from Free into the "home" version.
But, let's look at the current one i.e. version 5.6 -
Manually running the unpacker (innounp) indicates that this is using version 5.5 of the inno setup tool, and that it can't handle unpacking it. That is most likely the issue. Fortunately, the creator of the innounp has updated it recently, and it will unpack the current TB_FREE executable. So, now, we can update the script with the newer unpacker exe, and try it again...
OK - looks like the way they also mark the version number inside the "ISS" file has also changed...They are now using language specific variable, so just like we had to make changes to support v 4.5, I had to make a change to how it picks up the version number. Once I do a final test, I will upload v14 of the script
Edit...
Well, I fixed all that, and the loaded program still fails after building the PE...Needs different configuration files, etc. Bottom line is that I don't use this anymore, and don't want to install it for "real" on my system to try to debug why the files need some other sort of configuration or registry information. If you (or anyone else) wants my edits for V14 - which update the innounp and also properly extract the version number, let me know. Otherwise, my suggestion is to go find an older version if you can, OR USE THE INCLUDED ISO (based on Linux)
Scott