The Jacobite steam train, made famous by the Harry Potter films, broke down on its first day back in service since suspension.
Operator West Coast Railways (WCR) previously suspended the service after it was told to fit a new central locking system onto carriage doors.
Following the suspension, the operators complained that the multimillion-pound repairs could “destroy” the business and was able to return to the tracks with a reduced capacity.
However, just a few hours after service resumed, ScotRail confirmed that the charter train had broken down near to Glenfinnan.
The breakdown down affected a number of other services on the line, forcing ScotRail to suspend trains between Fort William and Mallaig temporarily.
The disruption lasted around two hours before the broken down train was cleared and issues with the line were resolved.
West Coast Railway confirmed that the train services were running as normal on Tuesday.
The train is more familiar to many as the Hogwarts Express, made world famous by the Harry Potter movies.
The iconic steam train starts off at Fort William and takes in the famous Glenfinnan viaduct and Arisaig, before reaching Mallaig on the West Highland Line.
The service has operated for more than 30 years under an exemption that allows it to run with the style of carriages on the main lines, which is typically not allowed.
A West Coast Railways spokesperson said: “West Coast Railways apologises to customers on our Jacobite service today. Earlier today, just outside of Glenfinnan, the Jacobite broke down due to extremely poor weather conditions.
“The team onboard did their best to restart the service, but the Jacobite had to be rescued by another diesel engine and we were not able to offer customers the experience we planned.
“We will be issuing them with compensation.”
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