Cursor stuck on pencil tool

may be you are trying to work on locked layer ... 

i had the same go to tools then press cursor i hope it helped even if its for others =]

Thanks Chloe had the same problem & was going demented and your solution worked for me too

Chloe,

Hopefully, you can save the artwork.

I can't even select all my artwork to paste into a new file.

What about Ctrl/Cmd+A in the old one, then Ctrl/Cmd+F in the new one?

You may try going through this general list.

You may try the following (you may have tried/done some of them already) and see whether it helps (the following is a general list of things you may try when the issue is not in a specific file; 3) and 4) are specifically aimed at possibly corrupt preferences):

1) Close down Illy and open again;

2) Restart the computer (you may do that up to 3 times);

3) Close down Illy and press Ctrl+Alt+Shift/Cmd+Option+Shift during startup (easy but irreversible);

4) Move the folder with Illy closed (more tedious but also more thorough and reversible);

5) Look through and try out the relevant among the Other options (Item 7) is a list of usual suspects among other applications that may disturb and confuse Illy);

Even more seriously, you may:

6) Uninstall, run the Cleaner Tool, and reinstall.

http://www.adobe.com/support/contact/cscleanertool.html