View Full Version : FlexLM Error -8

January 9th, 2011, 02:57
I'm working with FlexLM v7.0c..

Thanks to CrackZ for the SDK and the site for continuing to host the papers on flexlm, I was able to get as far as generating a license for specific features I need.

Where I'm stuck is understanding exactly what info the target app is looking for within the license. What I mean is, If I generate a workstation / locked node (host Id=disk_serial_num), I can see that the status of the application changes from "demo" to "registered" but I get an error displayed in the about->help box:
running in demo mode(-8) Single User License, DISK xxx, registered

If I create a node license without a host id, I get error -21..

Anyhow, I'm not exactly sure how to go about fixing this problem.
Google et all seemingly dont give a whole lot of info on this from an RE side of the fence. Has anyone else ran into this?

January 9th, 2011, 13:09

I'm hoping you can identify lc_checkout().

Can you confirm if the -8 and/or -21 error is coming from lc_checkout()?. Both of these have a definitive meaning in FLEXlm so first thing to find out is if this is a FLEXlm error code or an application specific one.

Regards, CrackZ.

January 9th, 2011, 22:24
Yeah, its surely coming from lc_checkout.

I think my seeds are correct but perhaps the vendor codes are not.. still digging into this to understand where I went wrong.

Funny though, if EAX==0 when returning from lc_checkout, my target app doesn't complain about demo or -8 error.
There is soo much about this that I clearly do not understand yet.

January 10th, 2011, 00:03
Following Pilgrim's essay "PC-Based License.."

Everything basically goes okay up until step 6 (Finding the key5 & seeds 1 & 2)

I'm pretty sure that I've got the basic idea down, anyone mind taking a look at the target app and confirm my findings? I believe the seeds and vendor keys are correct - perhaps I'm just failing to generate the license w/ feature correctly.

January 10th, 2011, 10:28
Heres what I found on a quick search.
FLEXlm error: -8 Invalid (inconsistent) license key.
This usually happens when a license file has been altered.
Like the license key and data for the FEATURE do not match. Maybe you have the wrong FEATURE name.

FLEXlm error: -21 License file does not support this version.
The version requested is greater than the highest version supported in the license file FEATURE line.

Damn IPhones: Sorry about that hwnd, I didn't see post #4
CrackZ is 100% right you don't or didn't have the correct seeds.
(My mistake) I was assumed you were using LMKG to generate your Vendor Key info. So on the fist look I thought there was no way you had Vendor info wrong maybe you XORD wrong or didn't know feature of version info .
But after reading things went wrong in step 6 I'm 100% sure you didn't have venoder key 5 right which gave you the wrong seeds.
PS. Glad to see you figured it out...

January 10th, 2011, 16:09
I'll lay you good odds the following:

-8 is incorrect seeds.
& the -21, what kind of license are you generating, SIGN=maybe?.

Regards, CrackZ.

January 10th, 2011, 20:20

I believe you're bang on!
One hangup I'm having is working with the 7.0 version and using the 6.1+ tutorials.

January 10th, 2011, 22:52
I figured it out, thanks for all the info on CrackZ's page and this forum.

Here is my final lm_code.h


#define ENCRYPTION_SEED2 0x8959E16B

#define VENDOR_KEY1 0x920733F2
#define VENDOR_KEY2 0xD55A945E
#define VENDOR_KEY3 0xFC9A807B
#define VENDOR_KEY4 0xBCDFF9A5
#define VENDOR_KEY5 0x2C44EEE8

#define VENDOR_NAME "" // removed per forum rules


January 11th, 2011, 08:32
Those seeds look like a range of C++ compilers me thinks ;-).

Regards, CrackZ.

January 11th, 2011, 18:07
Yup! for the HC16. Good memory! :-)

January 13th, 2011, 14:43
Those seeds and vendor keys don't look like the ones I found if I understand which unmentioned vendor name was being used. The company used several different names depending on which OS hosted their tools.