Andy,
The Script Editor is based on Text Edit, therefore, a 32K limit.
Several solutions:
1.) Break your script into 'libraries' and use the load command.
2.) Break your script into logical boudaries and call run script on them.
3.) Use Frontier's editor. It has no 32K limit.
4.) Use MPW and Jon Pugh's shareware MPW Tool to run yur scripts
5.) I believe there is or will be soon commercial replacements for the Script
Editor.
DO