[KaleunMarco]

Originally Posted by DaveR

so, have a win7 computer, installed SH4 and JSGME; it works. win7 has read only folder set with 'check mark'. doing that on win10 folders and JSGME reports it can't write to anything. this was working before...…..

dave,
you need to remove the read-only status.
open a windows explorer window and browse to the folder where SH4 is installed.
right-clock on the highest level SH4 folder and select Properties. Uncheck the read-only box and click OK. you will be asked at what level do you wish to apply the change, select "this folder and all subfolders and files". the process will take a few minutes, so have patience. :-)
this should cure your problem.
it will work for win7 and win10.
good luck.