Unsupported format?

[WoodyOne]

Hello.

Lately I'm having troubles with my alpha 6500.

A couple of days I've been taking pics all day long. But the last ones seem not to be welcome to my computer.

 

Lightroom says:

"The file appear to be unsupported or damaged"

And Windows says:

"It looks like we don't support this file format"

 

I think of a battery issue.  It seems when is 15% or less the card does not write the file properly.

 

Have you heard anything related?

Thanx in advance!!!