LG SAEF file upload and Solspace’s formhelper.

Has anyone been able to successfully integrate the LG SAEF file upload extension with Solspace’s Form Helper plugin? I have LG SAEF file upload working with a regular SAEF, and am successfully using formhelper to edit the entries, but when I try to upload a file from the edit form, I get this error:

Notice: Array to string conversion in /home/xxx/xxx/xxx/core/core.upload.php on line 95

Any help would be appreciated. Thanks