Hello, I have Trados Studio 2017 and following problem: cannot change phase of project, this message apears: "Value cannot be null. Parameter name: key". Thanks in advance for your support. Best

Hello, I have Trados Studio 2017 and following problem: cannot change phase of project, this message apears: "Value cannot be null. Parameter name: key". Thanks in advance for your support. Best
Or search the knowledge base for this message text, there may be other known error situations with this message.
Or search the knowledge base for this message text, there may be other known error situations with this message.