Dragging construction set from library is very slow

[macumber]

Issue overview

Dragging a construction set from the library is very slow and/or will crash the application. Reported at https://unmethours.com/question/98295/construction-sets-not-loading-from-library/

Expected Behavior

Dragging a construction set from the library should be fast

Steps to Reproduce

1. Load an ASHRAE library file
2. Go to Constructions tab
3. Drag a PriSch construction set into the model

Details

Environment

Some additional details about your environment for this issue (if relevant):

• Platform (Operating system, version): All
• Version of OpenStudioApplication (if using an intermediate build, include SHA): 1.7.0

Context

Cannot create a model

Workaround

Potential workaround is to use 1.6.0 which does not have the library search feature