Fixya.com does not have updated drivers for any computerized equipment.
If you have not already done so, I suggest you contact Pentax directly regarding an updated driver for your Optio RX18.
Pentax is owned by Richoh.
You may be able to find assistance from another Optio RX18 owner through the PentaxForums.com : https://www.pentaxforums.com/forums/7-pentax-compact-cameras/194995-pentax-optio-rx18-rz18.html You will need to register (free) to post a question on a forums. Best wishes.
Answers & Comments
Hello, Susan -
Fixya.com does not have updated drivers for any computerized equipment.
If you have not already done so, I suggest you contact Pentax directly regarding an updated driver for your Optio RX18.
Pentax is owned by Richoh.
You may be able to find assistance from another Optio RX18 owner through the PentaxForums.com :
https://www.pentaxforums.com/forums/7-pentax-compact-cameras/194995-pentax-optio-rx18-rz18.html
You will need to register (free) to post a question on a forums.
Best wishes.