PLC IDE error: when program plc via LD, got error "An error encountered while drawing this network"

[zhenhui]

Hello

When program in ctrlX PLC (LD programming), when deleting a contact (picture_1), an error occours(picture_2), which can be reproduced under V12.9 and V1.16.0.

Error message: An error encountered while drawing this network, The contents cannot be displayed. 

Error occurs:

Is there anyone run into the similar trouble? 

[CodeShepherd]

Could you please provide us a PLC project and step by step instruction how to reproduce the error?

[CodeShepherd]

We could reproduce the behaviour and are in contact with CODESYS about it.

[CodeShepherd · Accepted solution]

The bug will be fixed from and ctrlX PLC Engineering 1.20.11 (part of ctrlX WORKS 1.20.11) and 2.6.2 on.