I think there is a way to find the version of the license, by checking the disassembly, or real time trace for the lc_set_attr call.
The function is defined as:
lm_extern int API_ENTRY lc_set_attr lm_args((LM_HANDLE_PTR job, int key,
LM_A_VAL_TYPE value));
The second arg will indicate the license version, for example, in the tracing of the code:


00478026 |. 8B4424 34 MOV EAX,DWORD PTR SS:[ESP+34]
0047802A |. 6A 00 PUSH 0
0047802C |. 6A 4C PUSH 4C
0047802E |. 50 PUSH EAX
0047802F |. E8 BCBFFBFF CALL <_lc_set_attr>

You will find the second arg is 0x4c, and look back to the lm_attr.h, there is the following def, 76 is the 0x4c in Dec. :

#define LM_A_CKOUT_INSTALL_LIC 76 /* (int) true if BEH_V7+, else false */

So you must use behavior V7.

good luck.