acsm file loads, can view, fails to read

[rcmcdonough]

with ADE 4.5.10, am able to successfully open an acsm file (ade converts it to pdf and loads it into the viewer), but cannot select areas of text and have it read.  It worked for ~8 pages of the ebook and then stopped. entering <option><esc> on selected text just gives the generic "boink" noise that occurs when you enter an invalid command in an application.

details:

• MacBook Air
• macOS Mojave, Version 10.14.2
• ADE 4.5.10
• using Adobe ID
• downloaded from Adobe Digital Editions | Download (both 4.5.10 and 3.1 versions, not on system at the same time)

steps to reproduce:

• double click on acsm file
• in ade file viewer, highlight a section of text
• hold <option><esc> keys and release at the same time
• command error sound, no audio of selected text being read

other things tried:

• uninstall ADE 4.5.10 (move app to trash, move folder to trash) and reinstall 4.5.10
• uninstall ADE 4.5.10 and install ADE 3.0
• in ADE 3.0
  • erase authorization (<command><shift>d)
  • double click on acsm file
  • enter authorization
  • file loads, can view it, no audio when highlighting text
• uninstall ADE 3.0 and install ADE 4.5.10
• in ADE 4.5.10
  • double click on acsm file
  • enter authorization
  • file loads, can view it, no audio when highlighting text

Any help on how to get this working would be appreciated.