Installation to MSSQL database fails due to a problem in mssql-create.sql relating to the boxes table.

Modifying mssql-create.sql to

--
-- Table structure & data for boxes

CREATE TABLE prefix_boxes (
[id] int NOT NULL IDENTITY,
[position] int DEFAULT NULL ,
[url] varchar(max) NOT NULL ,
[title] varchar(max) NOT NULL ,
[img] varchar(max) NOT NULL ,
[ico] varchar(max) DEFAULT NULL,
[desc] varchar(max) NOT NULL ,
[page] varchar(max) NOT NULL ,
PRIMARY KEY ([id])
);

SET IDENTITY_INSERT prefix_boxes ON;
INSERT INTO prefix_boxes ([id], [position], [url], [title], [img], [ico], [desc], [page]) VALUES
(1, 1, 'admin/survey/sa/newsurvey', 'Create survey', 'add.png', 'add', 'Create a new survey', 'welcome'),
(2, 2, 'admin/survey/sa/listsurveys', 'List surveys', 'surveylist.png', 'list', 'List available surveys', 'welcome'),
(3, 3, 'admin/globalsettings', 'Global settings', 'global.png', 'settings', 'Edit global settings', 'welcome'),
(4, 4, 'admin/update', 'ComfortUpdate', 'shield-update.png', 'shield', 'Stay safe and up to date', 'welcome'),
(5, 5, 'admin/labels/sa/view', 'Label sets', 'labels.png', 'label','Edit label sets', 'welcome'),
(6, 6, 'admin/templates/sa/view', 'Template editor', 'templates.png','templates', 'Edit LimeSurvey templates', 'welcome');
SET IDENTITY_INSERT prefix_boxes OFF;

Allows the table to be created.

Upgrades also fail on the boxes table but I haven't looked into why.