At some point between version 5.64.7540 and version 5.92 the file structure has changed. So how do I update when I want to overwrite the existing version to keep my settings and most important the language? Version 5.92 is lacking German language, the dropdown shows English as only langage option even though the zip package includes a "lang" folder full with numbered dll files. So, if overwritig is not possible due to the changed file structure, how to change the language?
There have been a few issues with the new directory structure, which have affected the Portable build in particular.
They are working on sorting it out for the portable, but in the meantime you may have noticed that CCleaner v6.00 does not have a portable build.
Hopefully the portable will be back, with the directory issues fixed, for v6.01.