Is the AutoCorrect (ACL) File Causing the Problem?
When you type a space or press ENTER, the background AutoCorrect feature tries to correct the spelling or grammar of a word or to add special symbols instead of some characters. The AutoCorrect list (ACL) stores a list of what words or characters to act upon, and what to substitute for them.
If this ACL file is damaged, a problem occurs when Word tries to access the ACL file. To correct this problem, back up the AutoCorrect list for your computer. For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base: