Aperture cannot locate newly imported referenced images
My friend and I both use Aperture (3.4.3) on OSX 10.7.5.
She recently started having an issue when importing photos as referenced, with images stored on her external hard drive.
After importing, on all images she gets the red slash thru the 'referenced master' badge, indicating that Aperture cannot locate the master images. Aperture also refuses to reconnect with the master images. It's worth noting that all other images in her library are correctly "referenced" to the same external hard drive. The issue is with newly imported images.
The only solution thus far is for her to import as managed, then relocate original out to the external hard drive.
She has both repaired and rebuilt her Aperture library with no change.
She has run Disk Utility on both her external hard drive and her internal hard drive which contains her Aperture library. No errors were found.
Has anyone seen anything like this? Suggestions are welcome!