Make LinkageUtils better with Error handling

BauSystem_Main/src/de/steamwar/bausystem/linkage/LinkageUtils.java

@@ -52,6 +52,8 @@ public class LinkageUtils {
                     linkOrUnlink(Class.forName(s), unlink);
                 } catch (ClassNotFoundException e) {
                     // ignored
+                } catch (Exception e) {
+                    e.printStackTrace();
                 }
             });
         } catch (IOException e) {