Cannot save .param file with beta version of 1.3.7

i cannot save my .param with any of the beta versions of 1.3.7? i went back to the 1.3.7 version and was able to save my file. when i tried to save using 1.3.7.n (n=1,2,3, or 4) i got an error box asking me if i wanted to report the problem - a couple of times i said yes so you may be able to find those…

please use the non tree version until its fixed.

tha’t what i have been doing. I really, really like the “tree version” option on the beta version. It is wonderful.