You may encountering the following error (or similar) on opening .gml
, .cnd
, std
or .prj
files in the Data Explorer or file conversion tools (e.g. OGSFileConverter
):
Error message:
Error XSDError in http://www.opengeosys.org/images/xsd/OpenGeoSysCND.xsd, at line 1, column 1: Start tag expected.
Error XSDError in file:///../bc/well.cnd, at line 5, column 195: Loaded schema file is invalid.
XMLInterface::isValid() - XML File is invalid (in reference to schema ./OpenGeoSysCND.xsd).
Error XSDError in http://www.opengeosys.org/images/xsd/OpenGeoSysCND.xsd, at line 1, column 1: Start tag expected.
Solution:
Open the affected file (e.g. well.cnd
in this case) in a text editor and remove the following parameter of the XML root element (the first element in < >
-brackets in the element, e.g. <OpenGeoSysCND>
):
xsi:noNamespaceSchemaLocation="http://www.opengeosys.org/images/xsd/OpenGeoSysXXX.xsd"
where XXX
can be CND
, GLI
, PRJ
or STN
depending on the file type.
Now the save the modified file and try to load it again.
OpenGeoSys will sometimes crash with an error message stating, that it couldn’t reduce the time step any more. There are several things that can be done to solve this:
If in the output log all values are NaN and one or more parameters were defined as functions, there is a good chance that division by zero, or other undefined operation happened.
This article was written by Lars Bilke and Feliks Kiszkurno. If you are missing something or you find an error please let us know.
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