Can you share the service so we can take a look at it? If you don't want to share it publicly, you can create a group and invite my username into it, mikem (Mike Minami).
Does this happen all the time? Are you updating attachments or adding new attachments?
Thanks,
Mike
The file can be up to 10 MB in size. The following file types are supported: 7Z, AIF, AVI, BMP, DOC, DOCX, DOT, ECW, EMF, EPA, GIF, GML, GTAR, GZ, IMG, J2K, JP2, JPC, JPE, JPEG, JPF, JPG, JSON, MDB, MID, MOV, MP2, MP3, MP4, MPA, MPE, MPEG, MPG, MPV2, PDF, PNG, PPT, PPTX, PS, PSD, QT, RA, RAM, RAW, RMI, SID, TAR, TGZ, TIF, TIFF, TXT, VRML, WAV, WMA, WMF, WPS, XLS, XLSX, XLT, XML, and ZIP.