The Transport Secretary hauled rail bosses in for an urgent meeting to discuss the poor performance on TransPennine Express (TPE) routes.
Rail services in Fife were disrupted after a train door malfunctioned.
Fife rail passengers endured further misery the day after First Minister Nicola Sturgeon warned ScotRail it was in the "last chance saloon".
Train services across Scotland are being delayed or revised due to a signal fault.
Rail passengers are facing disruption after a train derailed inside a depot.
Train services in Fife are being disrupted by a vehicle that has been left on the line.