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All Solutions
The error "Failed to evaluate variable Jacobian" occurs
An error occurred when evaluating the Jacobian matrix of the indicated variable. The domains in which COMSOL Multiphysics tried to evaluate the variable are...
Version: All versions - Platform: All Platforms
When I select
Global->Definitions->Functions->Thermodynamics->Thermodynamics Package
in COMSOL Multiphysics 5.0, the following error message occurs:
Error: An unexpected error occurred.
See log file for...
Version: 5.0 - Platform:
I use COMSOL 5.0 on Windows and get the following error message:
Internal error: Cannot convert ElemStruct to double
This error seems to come from the usage of a comma as the decimal symbol. To fix this, go to the...
Version: 5.0 - Platform: Windows
When I try to start the license manager for COMSOL 5.0, or later, on my Linux distribution I get an error message saying:
./lmgrd: Command not found.
or
./lmgrd: No such file or directory
Starting from version 5.0 of...
Version: 5.0,5.1,5.2,5.2a - Platform: Linux
My license file is locked to a dongle. When I try to start COMSOL Multiphysics 5.0, the following error message occurs:
Could not obtain license for COMSOL Multiphysics GUI
License error -9
Invalid host.
The hostid of...
Version: 5.0 - Platform: Windows
The COMSOL Desktop GUI crashes after a few seconds after I start it on my Red Hat Enterprise Linux 6.6 machine.
The error message says:
comsollauncher: cairo-misc.c:380: _cairo_operator_bounded_by_source: Assertion...
Version: 4.4,5.0 - Platform: Linux
A "License error" occurs.
These are the most common reasons for this error message:
The license file license.dat has been removed from the right directory in the COMSOL software installation. The license.dat file...
Version: All versions - Platform: All Platforms
An error "Maximum number of linear iterations reached" occurs.
If you get this error, the iterative linear system solver did not converge due to a bad initial guess or a bad preconditioner. To avoid the error, increase...
Version: All versions - Platform: All Platforms
An error "Initial guess leads to undefined function value" occurs.
This error message usually appears when you have set up an expression that returns “not a value”; that is, it is undefined for the initial...
Version: All versions - Platform: All Platforms
An error "Segregated solver steps do not involve all components" occurs.
The groups for the segregated solver do not include all dependent variables. One reason for this error could be that some boundary conditions...
Version: All versions - Platform: All Platforms
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