You may observe this error when importing an Early Power Estimator (EPE) .CSV file to the Cyclone® 10 LP EPE v17.0 Build 05.10.
To work around this problem, follow the below procedure.
1. Open the .csv file in a text editor. (Do not open it in Excel)
2. Search for the <Cyclone 10 Ordering Part Number> in the .csv file. (For example: 10CL055YF484C8G)
3. Change the <Cyclone 10 Ordering Part Number> in the given format. (For example: change the 10CL055YF484C8G to 10CL055F484C8)
4. Save the .csv file and close it.
5. Open the C10 LP EPE spread sheet.
5. Import the .csv file.
The above issue is scheduled to be fixed in the future version of the Cyclone 10 LP Early Power Estimator.