I've seen those dots when the custom library part called part of an older AC library.
For example I used the 3D text from the standard 10(?) library in a custom sign object and in later AC versions saw dots. In this instance since I discovered the GDL for 3D text is simple I replaced the Call statement with scripted letters and the custom sign objects are still working in 14.
The macros for the parts I used were not in the migration libraries.
Could this be it?
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"