When you open an existing document or create one, InDesign hangs, freezes, or endlessly displays the progress bar.
Note: Users who do not receive .indd files from users of the CJK versions of InDesign can function fine without the SING component.
In some cases, corrupt data related to the Smart INdependent Glyphlets (SING) component causes this issue. This component handles use of single glyph font files used to represent custom glyph necessary to extend standard font glyph sets. It is primarily used in Chinese, Japanese, and Korean (CJK) documents.