Magento Administration error when saving a product

hello On a 1.5.1 Magento store,With SCP extension installed for configurables products, we have an error that shows when saving a configurable or simple product (in backend=> catalog) the error is : SQLSTATE[21S01]: Insert value list does not match column list: 1136 Column count doesn't match value count at row 1. On the same time, on frontend, some configurable products with a price to 0 are shown as special prices, even if the price in backend is different : [login to view URL] I have no possibility to reindex data for prices in backend. This project is only dedicated providers with a Magento experience (I will have a look to your old jobs) Thank you