This isn't the kind of experience I want you to have when sending statements in QuickBooks Desktop (QBDT), Rlent.

I've conducted research and checked with our engineering team and found out that the investigation has been resolved. 

If may I ask, have you manually selected the 100 customers when printing statements? 

If so, and the issue persists, I suggest running the Verify and Rebuild data tools to fix it. This way, we can verify and resolve your company file's most commonly known data issues. 

Here's how to verify data:

1. Navigate to the File menu.
2. Choose Utilities, then select Verify Data.
3. Click OK when you see the message. QuickBooks detected no problem with your data.
4. If Verify finds an issue with your data, you'll be prompted to Rebuild Now or View Errors.
5. Click Close or View Errors and take note of the specific error message.

Next, here's how to rebuild the data:

1. Go to the File menu.
2. Choose Utilities, then select Rebuild Data.
3. Click OK if you receive a prompt to back up your company file.
4. Click OK when you get the message, Rebuild has completed,  and proceed to the next step.
5. Rerun Rebuild Data to make sure there are no errors.

Additionally, it's possible that it's a temporary issue with QBDT. To resolve this, utilize the QuickBooks Tool Hub. It is a launchpad with a collection of tools to assist with various concerns, such as company file issues.

Here's how to install it:

1. Close QBDT.
2. Download the most recent version (1.6.0.3) of the QuickBooks Tool Hub and save the file somewhere you can locate it easily.
3. Open the file (QuickBooksToolHub.exe).
4. Follow the on-screen steps to install and agree to the terms and conditions.
5. Then, double-click on your Windows desktop to open the tool hub.

To learn more, please refer to this link: Fix common problems and errors with the QuickBooks Desktop Tool Hub.

I've added this article to learn more about how to send statements to your customers: Create & send customer statements in QuickBooks Desktop.

If there's anything else I can do to help you with your statements, just let me know and I'd be happy to assist you.