Parsing PSD files

Hello,

I encounter a problem with an smart object layer. I used linked layer to parse this, the type is lnk2 but the version is 5. The documentation states that the version must always be 2.

Other smart object work fine, just this one and it is really simple, no effects, just one layer.

I'm using this documentation :Adobe Photoshop File Formats Specification

Is there a newer one or can somebody help me with this?

Thank you,

Pepy