Regex matcher in CoursewareContentsViewer crashes

[krooken]

Check that the correct page is requested. Find out why the pattern doesn't match.

java.lang.IllegalStateException: No successful match so far
at java.util.regex.Matcher.ensureMatch(Matcher.java:579)
at java.util.regex.Matcher.group(Matcher.java:352)
at java.util.regex.Matcher.group(Matcher.java:370)
at com.github.krooken.edxvideoviewer.CoursewareSectionViewer$1.run(CoursewareSectionViewer.java:138)
at java.lang.Thread.run(Thread.java:864)

[krooken]

I couldn't reproduce this issue when running from Eclipse, so it is needed more information in the crash logs.

[krooken]

This bug is postponed until further crash logs can be obtained.