Locator function getting stuck

Welcome to community.rstudio.com!

I'm not familiar with the fragman package, but it seems that turning your code into a reprex (reproducible example) would be your best bet at getting a helpful response. This will ensure we're all looking at the same data and code. A guide for creating a reprex can be found here.

Also, any more information you can share about what's happening when it gets "stuck" would be helpful to include.

One more thought - I did a quick Google search and found that the fragman package includes a sample dataset. Are you able to run through the tutorial using the sample dataset without trouble?