Hi Deleted when uploading the reports manually, make sure to upload the ".rsd" files before uploading ".rdl" files.
But the error sounds more like each report and the datasets are stored in a subfolder and the complete URL to reach each item is simply too long.
Maybe try to upload the reports just to a folder called "Test" in the root directory of the report server.
"UpdatesSummary" is a shared dataset and based on the file: "UpdatesSummary.rsd".
Each report has a reference like this: "<SharedDataSetReference>UpdatesSummary</SharedDataSetReference>"
You could also try to change the string to a fixed path like this (including the folder name): "<SharedDataSetReference>/Test/UpdatesSummary</SharedDataSetReference>" in each ".rdl" file.
Hope it helps.
Best regards
Jonas