Open the BAR file with WinZip/WinRar and check if there is META-INF folder. Inside you should find 5 files (if the BAR is signed correct).
Once you verify that the BAR is signed correct you can upload manual the BAR file (and not using ZIP file with Batch Import files option).
Scroll down the Add Release page and click on Add file bundle, enter bundle name, choose platform QNX, Min Supported version 10.0.0, select All touch as supported devices and upload the BAR file.