Hi

We have a problem with running midas frontends when they should connect to a experiment on a different machine using the -h option. Starting them locally works fine. Firewall is off on both systems, Enable non-localhost RPC and Disable RPC hosts check are set to 'yes', mserver is running on the machine that we want to connect to. 
Error message looks like this: 

...
Connect to experiment Mu3e on host 10.32.113.210...
OK
Init hardware...
terminate called after throwing an instance of 'mexception'
  what():  
/home/mu3e/midas/include/odbxx.h:1102: Wrong key type in XML file
Stack trace:
1   0x00000000000042D828 (null) + 4380712
2   0x00000000000048ED4D midas::odb::odb_from_xml(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) + 605
3   0x0000000000004999BD midas::odb::odb(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) + 317
4   0x000000000000495383 midas::odb::read_key(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) + 1459
5   0x0000000000004971E3 midas::odb::connect(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool, bool) + 259
6   0x000000000000497636 midas::odb::connect(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, bool) + 502
7   0x00000000000049883B midas::odb::connect_and_fix_structure(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >) + 171
8   0x0000000000004385EF setup_odb() + 8351
9   0x00000000000043B2E6 frontend_init() + 22
10  0x000000000000433304 main + 1540
11  0x0000007F8C6FE3724D __libc_start_main + 239
12  0x000000000000433F7A _start + 42

Aborted (core dumped)


We have the same problem for all our frontends. When we want to start them locally they work. Starting them locally with ./frontend -h localhost also reproduces the error above.

The error can also be reproduced with the odbxx_test.cxx example in the midas repo by replacing line 22 in midas/examples/odbxx/odbxx_test.cxx (cm_connect_experiment(NULL, NULL, "test", NULL);) with cm_connect_experiment("localhost", "Mu3e", "test", NULL); (Put the name of the experiment instead of "Mu3e")

running odbxx_test locally gives us then the same error as our other frontend.

Thanks in advance,
Martin