User Operation is waiting for "Building Workspace"

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As the title mentioned, I have developed a simple NFC app in eclipse and I am trying to run it in the mobile device to debug my code. However, when I try to run it, this message came out, the problem even cannot launch. It said one operation left, but it seems like it has stopped. Have anyone met the similar problem before, or anyone know what is happening here?

The screen comes out when I run the program

13 Answers

I had the same issue and I applied what the fellows had advised however it didn't work. I figured out that there were some folders under target-->classes directory that neither myself nor the IDE was able to clean/delete..
I restarted the machine then started the IDE and everything worked just fine.

Go to Project Menu Uncheck the Build automatically and Restart the Eclipse/STS IDE.

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For me the issue was due to incorrect build path of the maven project. Try configuring the build path and include only what is actually required is what i learnt. My parent maven project had 10+ child modules. My eclipse would take 3-4 mins waiting for background process for every file save. I removed [parent module]/src from the build path and restarted eclipse and issue got fixed.

I had the same issue. In my case the problem was I had so many files in my project. I was working working on a corpus and the corpus had more than 88000 files. I moved the files to outside of the project and everything started working as normal.

I ran into this issue and the reason was there was one project it was not build correctly. so if you ran into this issue in an existing working workspace review the recent changes or recently imported projects.

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