System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
   at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
   at BuildOnSave.BackgroundBuild2.<>c__DisplayClass30_0.<projectInstancesOfPaths>b__1(String path)
   at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at BuildOnSave.BackgroundBuild2.projectInstancesOfPaths(ProjectInstance[] allInstances, IEnumerable`1 paths)
   at BuildOnSave.BackgroundBuild2.tryMakeBuildRequest(String startupProject_, String[] changedProjectPaths)
   at BuildOnSave.Driver.beginBuild(String startupProject_, String[] changedProjects)
   at BuildOnSave.Driver.beginBuild(Solution solution, BuildType buildType, IEnumerable`1 projects)
   at BuildOnSave.Driver.beginBuild()---------- BuildOnSave CRASHED, please report to https://www.github.com/pragmatrix/BuildOnSave/issues