Comment 13 for bug 670228

Reassigning to correct project, this is indeed the web client corrupting binary/image fields in some conditions.
As Christophe found out, the base64 binary content is replaced by a URL path, such as "/openerp/image/get_image?field=logo&model=res.company&id=1"

This seems to happen mostly when a write concurrency error pops up, but I cannot seem to be able to upload a company logo via web-client without having a write concurrency error lately. (Reproduced with web client trunk revision 4123)

Temporary workaround: remove the company logo or upload it again with the GTK client.