Hi, Yesterday, I stumbled across a bug when using the Zinc Seaside adaptor that resulted in that the post fields of a request were not present in the WARequest. I found out that the problem occurred when converting a Zinc request into a WARequest. More particular: ZnZincServerAdaptor>>requestFieldsFor: aZincRequest | fields | fields := WARequestFields new. (aZincRequest method = #POST and: [ aZincRequest hasEntity ]) ifTrue: [ aZincRequest entity contentType = ZnMimeType applicationFormUrlEncoded ifTrue: [ fields addAll: aZincRequest entity fields ]. aZincRequest entity contentType = ZnMimeType multiPartFormData ifTrue: [ fields addAll: (self convertMultipart: aZincRequest entity) ] ]. ^ fields This method checks if the Mime Type is either applicationFormUrlEncoded or multiPartFormData in order to extract the post fields. Recently, ZnMimeType>>= got changed from: ZnMimeType>>= other ^ (self class == other class) and: [ self main = other main and: [ self sub = other sub ] ] to: ZnMimeType>>= other ^ (self class == other class) and: [ self main = other main and: [ self sub = other sub and: [ self hasParameters not & other hasParameters not or: [ self parameters = other parameters ] ] ] ] As my request had an additional parameter charset=utf-8, the equality with ZnMimeType applicationFormUrlEncoded failed and hence the fields were not extract. While I assume that the comparison of the Mime type parameters in #= is there for a good reason, and the best way to fix this problem is to change the #requestFieldsFor: method in order to match the Mime type differently, I wanted to briefly check with the mailing list before opening an issue + submitting a patch. Kind regards, Andy