Sometime you will get this error "svn: OPTIONS of 'https://188.8.131.52/svn/xxx': Server certificate verification failed: issuer is not trusted (https://184.108.40.206)" when setting svn (source control) on Coda.
The solution is so easy to solve.
Open your terminal -> type " svn list yourservername", e.g. " svn list https://220.127.116.11", then will show that notification
Certificate information: - Hostname: 18.104.22.168 - Valid: from Tue, 28 Jun 2011 02:36:55 GMT until Wed, 27 Jun 2012 02:36:55 GMT - Issuer: Taipei, Taiwan, TW, RD, ??? - Fingerprint: XXX(ignore that) (R)eject, accept (t)emporarily or accept (p)ermanently? p
choose 'p' to authenticate this certificate on your computer permanently. Back to your coda reconnect successfully.