Pen tool not functioning correctly!

[kristofus]

Good day.

I have been using Adobe Illustrator for half a year, at school, and at home.
I recently purchased Adobe Illustrator CS2, and it has been working properly for half a week. However, yesterday I encountered a very annoying problem, and I can’t seem to fix it. So I ask you for help-
Using the pen tool to trace an image, I create curves of various proportions.
For each anchor point I create, I always have to click it once more to covert the anchor point. But recently the pen tool has had problems detecting the anchor points!
When I try to convert an anchor point, it only places a new anchor point above it. And when trying to complete a circle by placing the last anchor point on the first one, it only places a new one… This is not a constant problem.. Some times it works, and some times it don’t. I usually have to restart Illustrator to fix it, but the problem returns after some time. Anyone that can help me?

 

[apepp]

...try trashing illustrator preference file, then restart illustrator, see if that helps...

...if you are on mac os x it will be found here:

Users/'username'/Library/Preferences/Adobe Illustrator CS2 Settings/Adobe Illustrator Prefs

...not sure exact location on windows, but it may be named something like 'ai.prfs'

andrew