The first crash thread, indicates a “thread 68” crashed, which is saying is Baios, or BIOS.
Have you recently changed hardware drivers or any other hardware related stuff on your mac?
Also, a SIGSERV fault, on the “EXCEPTION TYPE”: line indicates a bad or segmented RAM memory problem, or simply a “bad pointer” to a RAM address that is not working anymore.
I would recommend using Onyx for Mac, do all the required maintenance tasks on your mac, and doing a complete hard reboot, resetting the PRAM as well. You can easily find how to reset your PRAM for your particular Mac online.
If that does not work, after that I would reinstall Nuendo, see if this overwrites any bad or corrupted code on your system drive.
It looks to me as though Nuendo is not able to access memory as it should, and this could be due to a fragmented file somewhere, or worse yet, a bad RAM memory chunk. It happens.
I hope this is what is ailing you.
Thread 68 Crashed:: Baios Processing Thread
0 com.steinberg.nuendo10v3 0x000000010341d564 0x101d3e000 + 23983460
1 com.steinberg.nuendo10v3 0x00000001034b1a7a 0x101d3e000 + 24590970
2 com.steinberg.nuendo10v3 0x0000000103414412 0x101d3e000 + 23946258
3 com.steinberg.nuendo10v3 0x000000010341423f 0x101d3e000 + 23945791
4 com.steinberg.nuendo10v3 0x000000010344ba2a 0x101d3e000 + 24173098
5 com.steinberg.nuendo10v3 0x000000010343a6de 0x101d3e000 + 24102622
6 com.steinberg.nuendo10v3 0x00000001034b271b 0x101d3e000 + 24594203
7 com.steinberg.baios 0x000000010d271e15 0x10d259000 + 101909
8 com.steinberg.baios 0x000000010d277785 0x10d259000 + 124805
9 com.steinberg.baios 0x000000010d290764 0x10d259000 + 227172
10 libsystem_pthread.dylib 0x00007fff73b3a109 _pthread_start + 148
11 libsystem_pthread.dylib 0x00007fff73b35b8b thread_start + 15