I've also run the sample script that comes with illustrator, and the same thing happens. It creates a text box with text, but setting the properties of the text crashes.
Regards
Santa
tell application "Adobe Illustrator"
activate
if (count of documents) is 0 then
make new document
end if
-- Create a rectangle that will be used as the first text area
set theRectanglePath to make new «class shRC» at beginning of document 1 ¬
with properties {«class paPs»:{100, 200}, «class pSHh»:40, «class pSHw»:200}
-- Create the area text object
set theText to make new «class cTXa» at beginning of document 1 ¬
with properties {name:"T1", «class cxDT»:«constant eTXte062», «class cTXp»:theRectanglePath, «class pCNT»:"This is a test string to see how text flows through three boxes."}
-- Set the characteristics of the text associated with the newly created text frame
set properties of every word of the text of theText to ¬
{«class aiFC»:{«class RED »:0, «class GREN»:0, «class BLUE»:255}, «class cTXf»:«class cTXf» "Times-Roman", size:24}
end tell