"selection cannot be started and there are no new starts" when using pydev / eclipse

Question

I get the above error when running a python file that worked in the past. I think I know how this happened, but I don’t know how to fix it. I have 2 dual boot computers of different os and using dropbox to sync between them. I used to sync my eclipse workspace with my Mac and Windows computers this way and everything worked fine (except that I would have to change the location of the python interpreter depending on which system I used).

I started getting the above message after adding Linux (fedora) to share Dropbox files. But my problem now, when I try to update my python interpreter (in windows), it does not save my settings. I can hit autoconfig and it will find the path to python and all the files, and I click apply / ok, but when I return it all is empty. I am pretty sure that the linux machine loaded my settings, but I need to develop on all three boxes, so I need them to be kind of synchronized.

I wonder how to fix it, and if there is another way to do this, so that I do not have this problem in the future?

update: this def. has something to do with my work area. When I change the default workspace to a new folder and install the python interpreter, it works. Still not sure how to do this for long (no need to copy the code back and forth across new workspaces.

Answer 1

I think the answer on how to split the workspace between other environments is still very useful, but if someone has a problem with simlair and just need to fix it to work quickly here:

• go to the file, go to workspaces and find where your workspace is.
• Go to this folder and rename the .metadata folder and restart eclipse
• Everything will be absent in eclipse, so go to the file → import and import a folder with all your projects (create a root folder for all projects so that you do not have to import them separately).
• configure any settings that you had before

This is not the best solution, but it works. Hopefully someone has a way to prevent this problem in multiple environments.

Answer 2

It seems to be the preferred way through F9: http://pydev.org/manual_adv_launch.html

Answer 3

Starting eclipse is the same as last time. then the first time it starts in this way. in the package explorer (left). doubleclick res, then menu. then right-click on the main menu (name.xml). The frmo menu, select run, then run as an application. and you can execute by default next time (from the menu or shortcut).

Answer 4

This problem can often be solved by exiting the eclipse and restarting (if it is convenient for you). Changing mid-level workflows can often confuse Eclipse, even if PyDev is configured correctly.