I recently updated our local server to Appian 7.3. Everything seems to be be fin

1. Stop the application server
2. Delete the application server log
3. Start the application server
4. Open it in a text editor and go all the way to the top
5. Do a "Find All" of the word "failed" and see if they are plug-ins failing to deploy or if you are indeed deploying the necessary plug-ins, if this is a migration (e.g. you went from Appian 7.2 or older to 7.3 it could be you didn't bring the plug-ins from _admin\\plugins with you which means the icons will be missing when you open an existing model.

1. Stop the application server
2. Delete the application server log
3. Start the application server
4. Open it in a text editor and go all the way to the top
5. Do a "Find All" of the word "failed" and see if they are plug-ins failing to deploy or if you are indeed deploying the necessary plug-ins, if this is a migration (e.g. you went from Appian 7.2 or older to 7.3 it could be you didn't bring the plug-ins from _admin\\plugins with you which means the icons will be missing when you open an existing model.