I know that you have marked svn_wc_adm_probe_open3 as deprecated however I assume you expect it to still work. And it does on Mac OS X.
When called like this: svn_error_t *error = svn_wc_adm_probe_open3( &adm_access, NULL, norm_path.c_str(), false, 0, NULL, NULL, pool ); Where norm_path is: B:\wc2\test\file1.txt I get this error: cmd_info: svn_wc_adm_probe_open error 02C02290 'B:' is not a working copy Barry