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Plato - Bad Chemistry Disks - Printable Version

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Plato - Bad Chemistry Disks - GullibleRaspberry9 - 11-25-2019

I have been going through the Plato High School Science - Chemistry course with my son, be we are hitting some bad disks.  

I have both the Mess emulator and the v9t9 emulator able to run the Plato Rom with the TIDisks downloaded from either whtech ftp or 99er download database.

I have never had any issues running any of the disks for many different subjects: High School writing, math, biology, physics.   However, in the Chemistry subject disks: 7, 9, 10, 12, 14 all load, get past the Plato welcome screen and to the course Menu screen.  It will say for example, "Menu 1. Chemical Reactions 1 Tutorial 2. Additional Studies 3. Select another Diskette.

When I choose 1 for the tutorial,  the disk starts reading but then just freezes.  The screen doesn't change, and the white message on the bottom just says: "Type the number of the" . 

I am hoping someone has any idea to help us along so we can finish this great course for Chemistry.  My son loves this style of learning.

Thank you for any suggestions