>Not quite - I was curious regarding your migration from ON ERROR to TRY/CATCH to manage project error services.

Project error services. I assume you mean a global error handler for an executable or com component?

Well, since an error and an exception are identical as far as your code is concerned, just replace the code that looks like this:

on error myHandler(error())

*** Application code with read events

on error 

function myHandler
lparameters tnError
do case 
     case tnError = 1705 && File Access denied
*** ect. ect.
endcase
return

with code that looks like this:

try 
   *** Application code with read events
catch to oExp for oExp.errorNo = 1705
   *** ect. ect.
endtry

Does that answer your question?