Why ask evry time to generate timetable

[Andrea Giordano]

I'm wondering why each time I close and reopen my fet file the timetable generated seems to be lost  (even if the there html files are still there and the folder "\...\timtable single\ is untouched). If I go to the students timetable I'm prompted to generate a timetable first ... I don't understand this. How can I possibly retrieve e previous generated timetable?
I even tried to export in cvs files and it report that the no activities has been exporte since there is no timetable generated
"250 activities exported.
250 active activities statistics exported.
0 scheduled activities exported, because no timetable was generated."

[Liviu Lalescu]

I'm wondering why each time I close and reopen my fet file the timetable generated seems to be lost  (even if the there html files are still there and the folder "\...\timtable single\ is untouched). If I go to the students timetable I'm prompted to generate a timetable first ... I don't understand this.

Because I was/am lazy/unexperienced. I am sorry! Each change of the .fet file will reset the timetable, even if the change is close and reopen the same file.

How can I possibly retrieve e previous generated timetable?

1) You have a .fet file in "\...\timetable single\", like: file_data_and_timetable.fet. Open it. Generate. In 99.99% of cases, you get a timetable, which is the same. In 0.01% of cases, FET will fail to find a timetable, because of bugs which are features. (see FAQ of FET, near the end, I think I wrote the explanation).

2) Generate with the same X and Y random seed and the same version of FET => same timetable. Again I think I wrote an FAQ entry.

I even tried to export in cvs files and it report that the no activities has been exporte since there is no timetable generated
"250 activities exported.
250 active activities statistics exported.
0 scheduled activities exported, because no timetable was generated."

Yes, of course :-(  Sorry! See my first section and do as in my second section (in this post).

[Andrea Giordano]

OK got it! Thanks anyway of yyour effort!!! No chance I could do even slightly better!