Our offices will be shut from close of business on Tuesday 23rd December 2025 until Monday 5th January 2026. Between these dates only credit card payments for ReFH 2 and WINFAP 5 will be dispatched, all other orders will go out in the new year. We will be providing limited software support on Monday 22nd and Tuesday 23rd December and the last posting date for LowFlows 2 dongles will be Thursday 18th December until Monday 5th January.
**Wishing you a very Merry Christmas and Happy New Year** :christmas_tree:
Our offices will be shut from close of business on Tuesday 23rd December 2025 until Monday 5th January 2026. Between these dates only credit card payments for ReFH 2 and WINFAP 5 will be dispatched, all other orders will go out in the new year. We will be providing limited software support on Monday 22nd and Tuesday 23rd December and the last posting date for LowFlows 2 dongles will be Thursday 18th December until Monday 5th January.
**Wishing you a very Merry Christmas and Happy New Year** :christmas_tree:

‘ReFH 2 calculation failed’ error message with ICM

We released an update to ReFH2 (v4.0.8560) in June 2023.

This version and ones that postdate it (4.0, 4.1 etc) it are not compatible with Autodesk ICM versions lower than ICM 2024.2, due to a change in the format of data exported by ReFH2.

If ICM displays an error message stating ‘ReFH2 calculation failed: ReFH2 hydrograph data is incompatible/invalid…’ ensure you have updated to a new version of ICM version 2024.2 or later. Please see this Autodesk help article (section under FEH13) for further information.