Hi, It?s me again with pjsua-lib from pjproject-1.5.5. After switching from 1.0.3 to 1.5.5 I?ve started to get this during the compilation of my app. Commenting out pj/ssl_sock.h in pjlib.h helps to build sucessfully (and I don?t use encryption in my app). /Users/alexei/Development/Telephone/../pjproject/pjlib/include/pj/ssl_sock.h:111: error: redeclaration of enumerator 'TLS_RSA_WITH_AES_128_CBC_SHA' /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Security.framework/Headers/CipherSuite.h:72: error: previous definition of 'TLS_RSA_WITH_AES_128_CBC_SHA' was here /Users/alexei/Development/Telephone/../pjproject/pjlib/include/pj/ssl_sock.h:112: error: redeclaration of enumerator 'TLS_RSA_WITH_AES_256_CBC_SHA' /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Security.framework/Headers/CipherSuite.h:78: error: previous definition of 'TLS_RSA_WITH_AES_256_CBC_SHA' was here /Users/alexei/Development/Telephone/../pjproject/pjlib/include/pj/ssl_sock.h:119: error: redeclaration of enumerator 'TLS_DH_DSS_WITH_AES_128_CBC_SHA' /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Security.framework/Headers/CipherSuite.h:73: error: previous definition of 'TLS_DH_DSS_WITH_AES_128_CBC_SHA' was here /Users/alexei/Development/Telephone/../pjproject/pjlib/include/pj/ssl_sock.h:120: error: redeclaration of enumerator 'TLS_DH_RSA_WITH_AES_128_CBC_SHA' /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Security.framework/Headers/CipherSuite.h:74: error: previous definition of 'TLS_DH_RSA_WITH_AES_128_CBC_SHA' was here /Users/alexei/Development/Telephone/../pjproject/pjlib/include/pj/ssl_sock.h:121: error: redeclaration of enumerator 'TLS_DHE_DSS_WITH_AES_128_CBC_SHA' /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Security.framework/Headers/CipherSuite.h:75: error: previous definition of 'TLS_DHE_DSS_WITH_AES_128_CBC_SHA' was here /Users/alexei/Development/Telephone/../pjproject/pjlib/include/pj/ssl_sock.h:122: error: redeclaration of enumerator 'TLS_DHE_RSA_WITH_AES_128_CBC_SHA' /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Security.framework/Headers/CipherSuite.h:76: error: previous definition of 'TLS_DHE_RSA_WITH_AES_128_CBC_SHA' was here /Users/alexei/Development/Telephone/../pjproject/pjlib/include/pj/ssl_sock.h:123: error: redeclaration of enumerator 'TLS_DH_DSS_WITH_AES_256_CBC_SHA' /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Security.framework/Headers/CipherSuite.h:79: error: previous definition of 'TLS_DH_DSS_WITH_AES_256_CBC_SHA' was here /Users/alexei/Development/Telephone/../pjproject/pjlib/include/pj/ssl_sock.h:124: error: redeclaration of enumerator 'TLS_DH_RSA_WITH_AES_256_CBC_SHA' /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Security.framework/Headers/CipherSuite.h:80: error: previous definition of 'TLS_DH_RSA_WITH_AES_256_CBC_SHA' was here /Users/alexei/Development/Telephone/../pjproject/pjlib/include/pj/ssl_sock.h:125: error: redeclaration of enumerator 'TLS_DHE_DSS_WITH_AES_256_CBC_SHA' /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Security.framework/Headers/CipherSuite.h:81: error: previous definition of 'TLS_DHE_DSS_WITH_AES_256_CBC_SHA' was here /Users/alexei/Development/Telephone/../pjproject/pjlib/include/pj/ssl_sock.h:126: error: redeclaration of enumerator 'TLS_DHE_RSA_WITH_AES_256_CBC_SHA' /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Security.framework/Headers/CipherSuite.h:82: error: previous definition of 'TLS_DHE_RSA_WITH_AES_256_CBC_SHA' was here /Users/alexei/Development/Telephone/../pjproject/pjlib/include/pj/ssl_sock.h:137: error: redeclaration of enumerator 'TLS_DH_anon_WITH_AES_128_CBC_SHA' /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Security.framework/Headers/CipherSuite.h:77: error: previous definition of 'TLS_DH_anon_WITH_AES_128_CBC_SHA' was here /Users/alexei/Development/Telephone/../pjproject/pjlib/include/pj/ssl_sock.h:138: error: redeclaration of enumerator 'TLS_DH_anon_WITH_AES_256_CBC_SHA' /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Security.framework/Headers/CipherSuite.h:83: error: previous definition of 'TLS_DH_anon_WITH_AES_256_CBC_SHA' was here Alexei