http://imagej.273.s1.nabble.com/Line-Ridge-Detection-Plugin-tp5010878p5010885.html
the problem is solved with adding the apache commons lang 3 jar file, as suggested by Thorsten.
Nevertheless, thank you for pointing me to the code where the prefix is stripped! So, in case of a exception, IJ retries with the package name stripped off, and that retry gave the misleading error message.
> Hi Michael,
>
>> Plugin or class not found: "biomedical_imaging.ij.steger.Lines_"
>>
>> Strangely, it first shows the dialog, so it has found the main class
>> already. Also the path in the error message is without the preceding
>> 'de.', which is in the plugins.config and the path inside the jar.
>> Any ideas?
>
> I can't comment on why the plugin isn't working as expected, but I do know
> the lack of "de." prefix is due to how ImageJ 1.x tries to strip package
> names from plugins:
>
>
https://github.com/imagej/ImageJA/blob/v1.49m/src/main/java/ij/IJ.java#L210-L223>
> Regards,
> Curtis
>
> On Wed, Dec 10, 2014 at 11:29 AM, Michael Schmid <
[hidden email]>
> wrote:
>
>> Hi Thorsten,
>>
>> is this plugin also meant for plain ImageJ (not Fiji)?
>> When trying to run it with plain ImageJ 1.49n8 (the current daily build)
>> on Mac OS X 10.6.8 (Java 1.6), upon pressing 'OK' I get an error:
>>
>> Plugin or class not found: "biomedical_imaging.ij.steger.Lines_"
>>
>> Strangely, it first shows the dialog, so it has found the main class
>> already. Also the path in the error message is without the preceding 'de.',
>> which is in the plugins.config and the path inside the jar. Any ideas?
>>
>> Michael
>> ________________________________________________________________
>> On Dec 10, 2014, at 17:30, Thorsten Wagner wrote:
>>
>>> Dear list,
>>>
>>> please find our new ridge detection plugin which implements a well known
>>> algorithm (however, we could not find an fiji/imagej implementation):
>>>
>>>
http://fiji.sc/Ridge_Detection>>>
>>> In the next days I will add a google code repository.
>>>
>>> Any suggestions or bug reports are welcome.
>>>
>>> --
>>> Kind regards
>>>
>>> Thorsten Wagner, M.Sc.
>>> Biomedical Imaging Group
>>> University of Applied Sciences and Arts Dortmund
>>>
>>> --
>>> ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>>
>> --
>> ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>>
>
> --
> ImageJ mailing list:
http://imagej.nih.gov/ij/list.html