message: Restore original getDefaultSearchPath
  This changelist restores the original definition of getDefaultSearchPath in MaterialXView, as the recently-revised version doesn't appear to be as robust across developer environments, occasionally preventing the viewer from finding its data libraries.
diff: @@ -61,13 +61,17 @@ template<class T> void parseToken(std::string token, std::string type, T& res)
  mx::FileSearchPath getDefaultSearchPath()
  {
  mx::FilePath modulePath = mx::FilePath::getModulePath();
  - mx::FilePath parentPath = modulePath.getParentPath();
  + mx::FilePath installRootPath = modulePath.getParentPath();
  + mx::FilePath devRootPath = installRootPath.getParentPath().getParentPath();
  mx::FileSearchPath searchPath;
  - searchPath.append(modulePath);
  - if ((parentPath / "libraries").exists())
  + if ((devRootPath / "libraries").exists())
  {
  - searchPath.append(parentPath);
  + searchPath.append(devRootPath);
  + }
  + else
  + {
  + searchPath.append(installRootPath);
  }
  return searchPath;
  