Not sure if anyone has seen this, Try to manage a device on a network security manager that is running verions 7. Received unable to determine sigfile version for sensor software= 18.104.22.168
NSM 7.0 does not support heterogeneous environments. Sensors should be on v. 7.
Upgrading the sensor to v.7 should resolve this problem.
Its strange as one of the sensors is 4010 and this had no problems to manager v7 but 3 2700 device gave this error.
question so if the device is managed by NSM 6 can you upgrade the sensors to V7 using the old manager?