Have just checked mine in pes the sock is there. It is the second colour and sewn in white thread. Hope you can download one that has the sock. hugs
Try going to: My files, then click on Download Center. There will be all of the files you have downloaded previously. You can then try to download the files in another format and convert it to PES. Mine is .ART and the sock is there.
Please let us know which file format you have tried to download. You can either add it as a comment or edit your post and include it there.
I have sent a message to the site owner concerning this issue.