Haven't seen the following quandary posted so I offer my own solution so that others in my situation can give me feedback.
I often have to print PAF reports in Spanish while most of my entering is done by gathering information from English language organized sources. I like working with all the recent enhancements and bug fixes but printing in only in English is not an option. My options are as follows:
I could use the most recent PAF version, 5.2 and enter all my information but since it cannot presently save in version 4 (for the Spanish reports), I would have to GEDCOM back because the v. 4 cannot read v 5 regular or backup file formats. If I had a version of the Spanish Paf 5.0 (It's been withdrawn from the LDS site)I would test it for compatibility but I had to avoid using it when it came out because it seemed quirky and I had the same file conversion problems.
Therefore, I have opted for continuing to work in PAF 188.8.131.52 because: -it is very stable -it only has a few problems when changing languages -it prints in Spanish easily -it is widely supported outside of the PAF 5.0 world
I use version 5.2 to check out new features and to print English stuff. I just take the v. 4 file and have it be converted to 5.2; I am then careful not to make input any changes on thsi version and expect to find them in my original 4.0 file.