QMD import fail

hey guys
i import my instruments via QMD import
when i restart multichart the instrument i just imported is all disappear
how could i handle this

Hello Samuel,

Please ensure you open QuoteManager from the main MultiCharts window: File → New → QuoteManager.
Once QuoteManager is open, import your instruments: File → Import Data.

Opening QuoteManager via the shortcut or double-clicking your QMD files to import them may cause conflicts with user rights if one application runs with admin rights and the other does not.

i found that data source of quote imported is not found in "Tool/Data Sources..."
after i re-install the data source, it's works