xisf absent in the list of known formats

[Alejandro Tombolini]

Hi, a probably bug or an strange behavior. Only in second instance of PI .xisf format is not available. It is ok in 1,3,4, etc.

[dnault42]

I've seen this same thing twice now.  I am only running one instance of PI (on Windows 7).  Re-installing fixed it the first time but I'm loath to keep re-installing it without knowing why this is happening.

Regards,
David

[Juan Conejero]

Hola Alejandro

I can't reproduce this problem on any platform. Use Process > Modules > Install Modules to reinstall the XISF module, and if this doesn't happen again, let's put it in the "things that happen" category

[Alejandro Tombolini]

let's put it in the "things that happen" category

Hi Juan,
Definitely that is the category. It is now solved and I cannot reproduce it again.

Saludos, Alejandro.

[dnault42]

Same for me.

Regards,
David

[georg.viehoever]

Well, maybe it is the same category as the occasional reports that processes go missing. It does happen, and in my opinion it happens more often than it should.

Georg

[Juan Conejero]

Well, maybe it is the same category as the occasional reports that processes go missing. It does happen, and in my opinion it happens more often than it should.

We have just added FAQ 3.9 to address this problem:

http://pixinsight.com/faq/

[georg.viehoever]

Hi Juan,
good idea to add it to the FAQ. Thank you!
Please note that the issue reported at the start of this thread happened on Linux, not Windows (judging from the screenshot).
Georg

[Juan Conejero]

Please note that the issue reported at the start of this thread happened on Linux, not Windows

Indeed, but it has been the only time this has been reported on Linux AFAIK. It could be a sporadic hardware problem, a driver or kernel error, or a desktop indexing application running in the background (such as Nepomuk or similar). These things happen from time to time without a known reason, although we have never seen it on our machines. In the case of Windows, these issues are definitely associated with virus scanning activity and/or virus infections.

[Alejandro Tombolini]

Please note that the issue reported at the start of this thread happened on Linux, not Windows

Indeed, but it has been the only time this has been reported on Linux AFAIK. It could be a sporadic hardware problem,

I am near to confirm this. After many time experimenting I believe that one of the 8gb ram memories and one of the data cables possibly generate that sporadically the modules disappear and other issues when saving and reopen saved project.   
Saludos, Alejandro