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List of Known Problems:
  1. Special Characters in Directories and File Names
  2. Decimal Separator
  3. User-specified unit hydrographs disappear after save and re-open
  4. Depth-area analysis with a hypothetical storm fails with WARNING 15403

Special Characters in Directories and File Names

Some languages include diacritic marks that modify letters.; Examples include the umlaut (¨) from German, the grave (`) from Portuguese, or the circumflex (ˆ) from Italian. There are many types of diacritic marks and many are used in more than one language. The Microsoft Windows operating system allows letters with diacritic marks to be used in directory and file names. The HEC-HMS software currently is not able to process directory or file names that include letters with diacritic marks. No directory or file name should use diacritic marks. The software may not be able to process the files if diacritic marks are used.

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Decimal Separator

Most countries use either a period (.) or a comma (,) as the decimal separator in numbers; each country has adopted a standard for which one is preferred. The software allows you to select which decimal seperator to use regardless of any setting in the operating system. In some countries, there will be problems when the software interacts with the clipboard of the operating system.

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User-specified unit hydrographs disappear after save and re-open

User-specified unit hydrograph read/write issues in v.4.3 have been traced back to the HEC-DSS library that was used in the build. The workaround is to manually create a Flow-Unit graph HEC-DSS record in HEC-DSSVue v.2.0 or v.2.0.1. Link to the DSS record in HEC-HMS by creating a Unit Hydrograph Paired Data and specifying data source as Data Storage System (HEC-DSS). After linking the record you should close and re-open HMS to verify the units are correct. This issue is scheduled to be resolved in the v.4.4 release.

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Depth-area analysis with a hypothetical storm fails with WARNING 15403

Depth-area analysis computes with hypothetical storm precipitation method fail with WARNING 15403. This issue is a known issue in v.4.3 and has been addressed for the upcoming v.4.4 release. Depth-area analysis computes with frequency storm precipitation continue to function as expected.

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