Models that used to work are now "Not for sale"

I have some code that uploads a model to shapeways, but I just tried the code today after a couple of months of inactivity and the model is now "Not for sale"...

Has there been a change in the API in the last month or two that would cause this?

I POST my model to models/v1 with the following params:
{ "file": base64.b64encode(model_filedata),
"fileName": model_filename,
"uploadScale":0.001,
"hasRightsToModel":1,
"isPublic":1,
"isForSale":1,
"isDownloadable":1,
"defaultMaterialId":6,
"title":"Test",
"description":"Test",
"acceptTermsAndConditions": 1,
}

But when I try to access the model, there are no materials listed and the model is "Not for sale".

Does anyone have any idea what changed?

Hi Alan,
thanks for the response. I spent a bit of time on this over the weekend, and I thought it was working for me, but I haven't quite figured it out yet.

Specifically, I have seen it happen that I upload a model, which is "Not for sale" but after refreshing several times (or perhaps waiting several minutes), all the materials become available! I'll spend a bit more time on it and get back to this thread.

Best,
Brian