[Steve B.]

I want to clarify that the only directory I will be able to make writable is the storage location the OS requires that I use for write access (i.e. /<ext sd card path>/Android/data/com.zubersoft.com/mobilesheetspro/files).  I'm pretty sure if I try to make any other directory on the removable SD card writable, it won't work.

Unfortunately, this is the case.

It's a fine example of the over-restrictive practices operated by Google.  Like a lot of other people, I don't like being told I must place my files in a specific location.

Unfortunately, there are a lot of people out there that need to be protected from themselves. Occasionally, that has been me!

As well, stopping malware from writing to the card is a big security plus...with unfortunate collateral issues as a result.

One of the big reasons I'm afraid to have one of those digital photo frames...SD card carries a worm back to your main computer when you plug in the card that was in the photo frame.