Error : The type "X" already contains a definition for "Y"

Error : The type "X" already contains a definition for "Y"

  
Hey guys,

today, publishing an eSpace, I got this error message during the compilation stage:

Internal Error

Compilation Error.
CleaningChecklist_List.aspx.cs(853,12): error CS0102: The type 'ssLeaseSuppliers.Flows.FlowAdministration.ScrnCleaningChecklist_List.lcvChangeOrder' already contains a definition for 'resExecuteAction1_outParamId'
CleaningChecklist_List.aspx.cs(846,12): (Location of symbol related to previous error)
CleaningChecklist_List.aspx.cs(858,12): error CS0102: The type 'ssLeaseSuppliers.Flows.FlowAdministration.ScrnCleaningChecklist_List.lcvChangeOrder' already contains a definition for 'resExecuteAction1_outParamId'
CleaningChecklist_List.aspx.cs(846,12): (Location of symbol related to previous error)


State: Second stage compilation

Any idea on what this might be?

I'm using version 7.0.1.19
Deleted the action (ssLeaseSuppliers.Flows.FlowAdministration.ScrnCleaningChecklist_List.lcvChangeOrder) and did it over again, and now it works. o.O