Update README.md

README.md

@@ -14,3 +14,11 @@ Download the [latest release](https://github.com/RainbowUnicorn7297/thumper-modd
 * Each custom level must contain the level config file (config_*\<level name\>*.txt) and .xfm Object file (xfm_*\<level name\>*.txt).
 * The templates folder contains objects from the original levels. They can be copied and used in the custom levels, as long as the object names (obj_name) are not duplicated.
 * The examples folder contains examples showcasing how various objects can be defined and used in a custom level.
+
+## Troubleshooting
+### Cloud Sync Conflict
+In some occasions, Steam might detect there is a conflict between the cloud files and local files after turning ON/OFF Mod Mode:
+
+![Cloud Sync Conflict](https://steamcdn-a.akamaihd.net/steam/support/faq/cloud_conflict.JPG)
+
+You should always choose "Upload to the Steam Cloud". If "Download to this machine" is selected, you may end up with a save file without any scores. In this case, you can manually restore the save data from the backup folder of this modding tool to the savedata folder under the Thumper folder.