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Old 02-11-2016, 04:33 AM   #1
Junior Member
Location: Devon, UK

Join Date: Jan 2016
Posts: 6
Default MEGAN 6 Community Edition won't launch

Hi all.

I installed MEGAN 6 Community Edition as below on my Linux system (Fedora 23, java version 1.8.0_71). However I cannot get MEGAN 6 GUI to launch. I just get a new line with no error message. Does anybody have any wisdom on this please?? Apparently it should open a window automatically when installation is complete. This didn't happen and whenever I try to launch it from the directory into which I installed with:


... I get the new line and no clue why it hasn't worked!


[chc@pmpc1451 Installs]$ ./ -c
Starting Installer ...
This will install MEGAN Community Edition on your computer.
OK [o, Enter], Cancel [c]

Please read the following License Agreement. You must accept the terms of this agreement before continuing with the installation.

MEGAN6 Community Edition - Metagenome analysis software

Copyright (c) 2016, Daniel H. Huson

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <>.

For more details, see

I accept the agreement
Yes [1], No [2]
Where should MEGAN Community Edition be installed?
The directory:


already exists. Would you like to install to that directory anyway?
Yes [y, Enter], No [n]
Where should MEGAN Community Edition be installed?
Which components should be installed?
2: Manual
3: tools
Please enter a comma-separated list of the selected values or [Enter] for the default selection:

Create symlinks?
Yes [y, Enter], No [n]

Select the folder where you would like MEGAN Community Edition to create symlinks, then click Next.
Extracting files ...

Check for updates how often?
Check for updates:
On every start [1]
Daily [2]
Weekly [3]
Monthly [4, Enter]
Never [5]

Set maximum allowed memory usage for MEGAN
Set max memory usage (in megabytes) [800-512000]

Setup has finished installing MEGAN Community Edition on your computer.
Run MEGAN Community Edition?
Yes [y, Enter], No [n]

Finishing installation ...
chc* is offline   Reply With Quote
Old 07-22-2016, 04:26 AM   #2
Junior Member
Location: Tuebingen

Join Date: Jul 2014
Posts: 6

Is there a file error.log in the installation window?
It may be a Java issue
MEGAN 6 requires an up-to-date Oracle JRE, but you can also try adding JavaFX to your OpenJava installation, doing something like this:
sudo apt-get install openjfx
See also: http://megan.informatik.uni-tuebinge...t-starting/127
Daniel.Huson is offline   Reply With Quote

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