I have spent many hours trying to get the iou licence to work. In the end it was simple.

The problem was the licence file I was using was iouc.txt (as downloaded from another thread)

You need to save the file using notepad++ (Or I think notepad too) or similar as file type *.*

(i.e no .txt)

The only thing in the file is between these lines.
-------------------------------------
[license]
gns3-iouvm = <moderated>;
--------------------------------------

Also the link to the licence is on the gns3 machine, in my case on windows G:\mycomputer\gns3\cisco iou\iourc

- as opposed to the iou image which you will upload via the web browser to the iou VM.

I followed these instructions http://members.gns3.net/thanks-for-downloading/

(note, you need to start the VM with the network adaptor as "bridged" do the updates and then stop the VM and change the network adapter to host-only.
(At this point you can upload the image via the browser)

Also when you start the VM I think it only shows the ip address to upload (eg. http://192.168.56.102:8000/upload) the second time you start it in host-only mode.
You can also see the ip address by using ifconfig on the first boot up.

I also had a problem as the image I was using seemed not to work although I did not know this and i thought it was the licence. -The process would freeze when superputty was launched.

these 2 images worked although I have not started using them properly at least I know everything else is lined up.

i86bi-linux-l3-adventerprisek9-12.4.bin
i86bi-linux-l2-adventerprise-15.1b.bin

If this works please thumbs up and can a mod sticky it. I think the solution is buried else where in other threads and hard to find. (the iou.txt file has 400+download so I thought it had to be correct and was looking at everything else.)

No I'm off to geek out on the switching........

Hello,
its very nice to help the community in such a way. It also took me hours to make the IOU run.
However putting the lincense here in clear text might get you some troubles for this site concerning cisco.

Have fun.

i have it as a text and it works well for me , if any one need it just send me a personal message :)

Hope I'm not preventing the rules here .. File attached.

<FILE REMOVED BY MODERATOR>

Guys, I mean, it's not really hard to run the Python script and gen your own...then cut and paste relevant stuff into the .iourc w/ nano or whatever. I suspect you might get your pee-pee slapped for posting that file.

It's kind of hard. All I'm getting is "ValueError: invalid literal for int() with base 16: ''" when running keygen.py.