Using Gallio with OpenCover coverage-report file contais result but Sonar reports 0%

I think this happens because your Jenkins service is running as "Local System account", but Sonar is running OpenCover with the -register:user switch under the hoods. You should be able to bypass this either by running the Jenkins service as a regular user account, or patch the Sonar-runner to omit the -register:user switch.

It turned out however that the PDB-files caused the problems. They were included in the repository and were for some reason not recreated by the build in Jenkins. The PDB-files therefor contained the wrong path to the actual code files.

Thanks for the help!

Check for version conflicts between OpenCover and the Gallio plugin.

I found that the later versions of OPenCover (starting with Version 4.0.1229) inserted a new tag in the coverage-report.xml file - which the Gallio plugin could not understand. When I rolled back to an older version of OpenCover (4.0.804) the coverage worked again.You can find more details on http://sonar.15.n6.nabble.com/coverage-report-xml-is-generated-but-sonar-says-coverage-is-0-td5008850.html

It looks like the Gallio plug-in has been updated, but I haven't pursued that yet (wanted to first confirm that this was the cause of the problem).