can't open the illustration. There is not enough room for the window; increase document area and try

A coworker having the same issue explained that it's related to A. having multiple monitors and B) closing documents with the vs through the file menu. He's been able to avoid this issue by closing documents by not x-ing out.

same problem here with windows7, cs6 and a Dell Laptop. The issue only happens when the window is maximized, otherwise documents open fine, but obviously this isn't optimal since I always work in fullscreen view...

I have the same bug as rebeccatelrock.

It is really annoying.

I has this issue, I thought it was a problem with a legacy version of illustrator and thats why the document wouldn't open. But infact it was a very simple bug within illustrator, the document window was not attached to the illustrator main window, it was minimised. I think if you try opening a blank document and dragging it up and attach it back to the illustrator window and then try opening the illsurator document you couldn't open before. It should work and you dont get the problem of the document not auto sizing when you try and open a new document.

Please adobe staff fix this error, if the document is not attached to the application window the document window should still auto re-size. This is a very irritating error.

I'll add an update to this problem using a Windows 7 Toshiba laptop running CS6 - I began to recieve the same message and Illustrator would resize itself to 1"h x 5"w box in the upper left of my screen.  Illustrator itself would be hidden behind the error dialogue box.

This would happen when I'd select an Illustrator file in Windows Explorer.  The first workaround was to maximize Illustrator and open the file through the Illustrator File>Open dialogue.  This always worked.

The final fix was to manually resized illustrator to about 1/3 screen size and try to open the file again in Windows Explorer.  Finally the files would open from Windows Explorer.  Keep reading.

However, each time I opened a file Illustrator would do a little hula dance and resize a good bit smaller than what I'd manually set it to.  It took about 4 resizes and 4 opening of files  = each time resizing the illustrator window larger until it actually occupied the whole screen.  It's working normally now.

Resize the application window. Just grab its lower right corner and drag.

I had this problem also, I realized that the window size literally was too small. I just dragged the window to the window size of my screen. then it worked!

This happened to me, too. Tried resizing the window and it didn't work. Incredibly disappointing that this could happen. Why could I work on the file before, save it close it, then not be able to re-open it. I have lost a lot of work on this file. Could somebody please help?

For me, the problem was being created by something that, in retrospect, makes complete sense, but is also rediculous!

The main application window was sized too small. That's it, that's all. I've been keeping the files I have open in windows detached from the main window and had apparently sized it too small vertically—I was attempting to save some wasted space so I could see windows below Ai.

I was able to faithfully recreate the issue by sizing the window as small vertically as is allowed, attempting to open a file and getting the error; then immediately increasing the window's size and attempting to open again—this time successfully!