Unable to open MEGAN

User Questions
1

Dear MEGAN Community,

I am unable to open the MEGAN 5 software. Here are the details

  1. I was able to open MEGAN5 just fine in the past

  2. I updated my MEGAN to MEGAN6 and it worked fine.

  3. I am trying to reinstall my MEGAN5 in a different directory. The idea is to have both MEGAN5 and MEGAN6 available because my supervisor sometimes prefer the color scheme from MEGAN5 which as far as I understand is not available in MEGAN6.

  4. after installation of MEGAN5 in different directory, I can’t open the MEGAN5, whenever I click and try to open the software there will only be a loading icon (the blue circle icon) for a few seconds then it disappeared and nothing happens.

  5. an error file is generated saying:
    MEGAN fatal error:
    java.lang.NumberFormatException: For input string: “32644;37965;134367;2323;28384;61964;48510;47936;186616;12908;48479;156614;367897;”
    For input string: “32644;37965;134367;2323;28384;61964;48510;47936;186616;12908;48479;156614;367897;”

  6. My MEGAN6 which is in different directory though, is still working well.

I look forward to receiving your answer

regards,
Irvan

2

MEGAN5 and MEGAN6 share the same properties file, and it looks like there might be an inconsistency in how something is stored in the properties file.
You can specify a different properties file for MEGAN5 by passing
-P properties-file
on the command line when starting MEGAN5, where “properties-file” is the name of some empty file that you have created.

However, such a problem shouldn’t prevent the program from starting, so please send me the full error.log file so that I can try to figure out what the problem is

3

Dear Daniel,

Thank you for your reply

I am running MEGAN in Windows10.

Instead of command line, I usually open MEGAN by just double clicking the Megan.exe. I am wondering how can I specify different properties file for MEGAN5.

In the error.logs file, there is only the texts I wrote above, there is nothing else.
MEGAN fatal error:
java.lang.NumberFormatException: For input string: “32644;37965;134367;2323;28384;61964;48510;47936;186616;12908;48479;156614;367897;”
For input string: “32644;37965;134367;2323;28384;61964;48510;47936;186616;12908;48479;156614;367897;”

Edit: Is the error log file you were asking is in the c:/Program Files/Megan folder (Where I installed the Megan5)? Let me know if what you mean is a different file that is in a different directory.

regards,
Irvanerror.log (258 Bytes)

4

I installed both MEGAN5 and MEGAN6 on a windows machine and didn’t experience your problem. Try locating and deleting the properties file .Megan.def.
Sorry that I can’t help you further, we no longer provide support for MEGAN5.

5

Dear Daniel,

Thank you somuch

I finally found the file and deleted the .Megan.def. and it worked.