Error When Using / Viewing Documents Module

**Describe the bug**
After installing the Documents module on a new DNN Platform installation v9.2.1, it seems to work on the first view, and then moving to another page and back again seems to cause it to "break"?

**DNN Information (please complete the following information):**
* DNN v9.2.1 (Platform)
* Documents Module v7.1.0

**Desktop (please complete the following information):**
- OS: Windows 7
- Browser: Chrome
- Version: 71.0.3578.98

**Error Log Entry**
UserAgent:Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36
Message:[REDACTED]\wwwroot\DesktopModules\Documents\Document.ascx(83): error BC30002: Type 'int' is not defined.

StackTrace:
InnerMessage:[REDACTED]\wwwroot\DesktopModules\Documents\Document.ascx(83): error BC30002: Type 'int' is not defined.
InnerStackTrace:
at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate) at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate) at System.Web.UI.TemplateControl.LoadControl(VirtualPath virtualPath) at DotNetNuke.UI.ControlUtilities.LoadControl[T](TemplateControl containerControl, String ControlSrc) at DotNetNuke.UI.Modules.WebFormsModuleControlFactory.CreateModuleControl(TemplateControl containerControl, ModuleInfo moduleConfiguration) at DotNetNuke.UI.Modules.ModuleControlFactory.LoadModuleControl(TemplateControl containerControl, ModuleInfo moduleConfiguration) at DotNetNuke.UI.Modules.ModuleHost.LoadModuleControl()