Let me explain why I am, or better "I was", using X-Lite: I am the co-chairman of the CSS Working Group at the W3C (World Wide Web Consortium) and our group has a weekly conference call to discuss the last CSS proposals. W3C proposes a SIP interface to their conference call system. X-Lite was one the rare softphones for Mac working well not only with landline numbers but also W3C's SIP account.
A while ago, X-Lite 4 just refused to launch, saying the version has expired. This looked absolutely acceptable to me since another version, 5, was freely available.
But nothing went well: if the contacts of v4 were imported into v5, my SIP settings were not. When I reconfigured v5 with my SIP account after a message "account connected and ready" or similar, I tried to make a call first to a local landline then to W3C's SIP line. I have a SIP account coming with my ISP subscription, allowing calls free of charge to all landlines in France and of course SIP.
Call to landline: impossible ; tried then a call to a SIP id: impossible. I tried everything, it did not work. And apparently, I am not the only one, almost all users are hitting the issue. I am geeky enough to have triple-checked my settings and tried using a SIP logger: X-Lite 5 is connected to the server but unable to make a call. In short: v5 is so buggy it should probably not have been released...
I want to say this is not unacceptable since the software is free... This is just totally counter-productive: I was so happy of X-Lite 4 I was about to buy a commercial version of your softphone. Looking at the mess the upgrade to v5 is, this is now out of question.
I found a ugly hack allowing to still use v4. Anyone needing it, feel free to ping me: you will easily find my public email address.
To CounterPath: I urge you to either a) reallow use of X-Lite v4 b) fix urgently v5 and release a fix/new version.