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Re: [TRNSYS-users] Regarding Libeng error

Mohammad,
The problem might be due to a TRNSYS update. To make sure, you could make a backup of your TRNSYS dir, uninstall TRNSYS AND DELETE EVERYTHING IN THE INSTALLATION DIR (E.g. C:\Program Files\Trnsys16) and then reinstall the latest version (16.01.xxxx). 

Longer explanation and other option:
Libeng.dll should only be loaded (or searched for) if Type155 (Calling Matlab) is used in the simulation but if a copy of Type155.dll is located in the Userlib directory (or one of its subdirectories) TRNSYS will get confused and try to load it - which will fail if you do not have Matlab installed. This is one of the reasons why some early TRNSYS updates were telling you that you HAD to do a clean install. A quick check would be to search for Type155.dll on your machine. You should have only one copy, in C:\Program Files\Trnsys16\Exe (assuming you installed TRNSYS in the default location). If you have any other copy in the UserLib directory (or a subdirectory) you can delete it and try again but I would still do a clean install.
I don't really understand why the problem would happen in TRNEdit and not the Studio. Are you sure you are running the same version of TRNSYS in both cases (e.g. did you install an update in a different directory and end up with two or more TRNSYS versions)?
Here's a tip that can be useful to track down similar problems: At the beginning of the simulation, TRNSYS writes some useful information to the log file (a file created in the project directory, with the same name as the deckfile and with a ".log" extension - make sure you have got the right file, check the time!) 
Here is a typical log file so you can compare:

[...]

### This will tell you which copy of TRNSYS you are running for sure ###

 *** Notice at time        :         0.000000
    Generated by Unit     : Not applicable or not available
    Generated by Type     : Not applicable or not available
Message : The TRNSYS Executable (TRNExe.exe) and main DLL (TRNDll.dll) are located in "C:\Program Files\Trnsys16\Exe" 

[...]

### Similar messages tell you which DLL's were found in UserLib ###

 *** Notice at time        :         0.000000
    Generated by Unit     : Not applicable or not available
    Generated by Type     : Not applicable or not available
Message : "TESSApplicationsLibrary_ReleaseVersion203.dll" was found but did not contain any components from the input file. 


I hope this helps,

Michaël Kummert
ESRU - University of Strathclyde
Glasgow, UK


mohammad abdunnabi wrote:

Dear Divad
Dear Diego

Thanks a lot for your ever support. in fact, I searched in my computer however I didn't have Libeng.dll the only what I have is Libeng.lib in the optional folder, the second thing I haven't got MathLab in my computer this means the calling mathlab example will not work.To clarify the problem again, when I run sdhw (example) in Trnsys Studio it is working fine, the message doesn't appear, however, when I run it in the Trnedit the message appears (the application has failed to start because Libeng.dll was not found) and when I press ok button it works and gives result (but this doesn't serve my program). I encountred this problem recently!! I was using it without any problem for the whole past year (may be due to the upgrade to the latest version but I have doubt about that).

please any further suggestions

Many thanks in advance


Mohammad
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