Found the following math rendering problems:
bootstrap.geoGAM.Rd:33: Undefined control sequence: \ensuremath in \ensuremath{\mathbf{s_{+}}...
bootstrap.geoGAM.Rd:33: Undefined control sequence: \ensuremath in \tilde{Y}(\ensuremath{\mathbf{s_+}})...
bootstrap.geoGAM.Rd:41: Undefined control sequence: \ensuremath in Y(\ensuremath{\mathbf{s}})^{...
bootstrap.geoGAM.Rd:41: Undefined control sequence: \ensuremath in ...t f(\mathbf{x}(\ensuremath{\mathbf{s}}))
bootstrap.geoGAM.Rd:44: Undefined control sequence: \ensuremath in Y(\ensuremath{\mathbf{s}})^{...
bootstrap.geoGAM.Rd:46: Undefined control sequence: \ensuremath in ...t f(\mathbf{x}(\ensuremath{\mathbf{s_{+}}...
bootstrap.geoGAM.Rd:47: Undefined control sequence: \ensuremath in ...t f(\mathbf{x}(\ensuremath{\mathbf{s_{+}}...
bootstrap.geoGAM.Rd:47: Undefined control sequence: \ensuremath in \ensuremath{\mathbf{s_{+}}...
bootstrap.geoGAM.Rd:48: Undefined control sequence: \ensuremath in Y(\ensuremath{\mathbf{s}})^{...
bootstrap.geoGAM.Rd:53-56: Undefined control sequence: \ensuremath in ...t f(\mathbf{x}(\ensuremath{\mathbf{s_{+})...
bootstrap.geoGAM.Rd:62: Undefined control sequence: \ensuremath in ...tilde{Prob}}(Y(\ensuremath{\mathbf{s}})=r...
geoGAM.Rd:51-57: Undefined control sequence: \ensuremath in ...t}\mathrm{E}[Y(\ensuremath{\mathbf{s}})\,...
geoGAM.Rd:59: Undefined control sequence: \ensuremath in f_{j}(x_{j}(\ensuremath{\mathbf{s}}))
geoGAM.Rd:60: Undefined control sequence: \ensuremath in x_{j}(\ensuremath{\mathbf{s}})
geoGAM.Rd:66: Undefined control sequence: \ensuremath in \ensuremath{\mathbf{x}}(\e...
geoGAM.Rd:67: Undefined control sequence: \ensuremath in Y(\ensuremath{\mathbf{s}})
geoGAM.Rd:71: Undefined control sequence: \ensuremath in \mu(\ensuremath{\mathbf{x}}(\e...
geoGAM.Rd:74: Undefined control sequence: \ensuremath in ...j} f_{j}(x_{j}(\ensuremath{\mathbf{s}}))
geoGAM.Rd:78: Undefined control sequence: \ensuremath in f_{\ensuremath{\scriptstyle \...
geoGAM.Rd:82: Undefined control sequence: \ensuremath in \ensuremath{\mathbf{x}}
geoGAM.Rd:83-84: Undefined control sequence: \ensuremath in f_{j}(x_{j}(\ensuremath{\mathbf{s}})) ...
geoGAM.Rd:85-86: Undefined control sequence: \ensuremath in f_{\ensuremath{\scriptstyle \...
geoGAM.Rd:87: Undefined control sequence: \ensuremath in \ensuremath{\mathbf{x}}
geoGAM.Rd:90-91: Undefined control sequence: \ensuremath in 
      g(\mu(\ensuremath{\mathbf{x}}(\e...
geoGAM.Rd:92-97: Undefined control sequence: \ensuremath in ...{u}}(x_{j_{u}}(\ensuremath{\mathbf{s}})) ...
geoGAM.Rd:98-106: Undefined control sequence: \ensuremath in ...e{ \sum_{w} f_{\ensuremath{\scriptstyle \...
geoGAM.Rd:115-116: Undefined control sequence: \ensuremath in g\left(\mu(\ensuremath{\mathbf{x}}(\e...
geoGAM.Rd:120-125: Undefined control sequence: \ensuremath in ...    g\left(\mu(\ensuremath{\mathbf{x}}(\e...
geoGAM.Rd:129-135: Undefined control sequence: \ensuremath in 
      \mu(\ensuremath{\mathbf{x}}(\e...
geoGAM.Rd:140-141: Undefined control sequence: \ensuremath in Y(\ensuremath{\mathbf{s}}) \...
geoGAM.Rd:143-150: Undefined control sequence: \ensuremath in ...mathrm{Prob}[Y(\ensuremath{\mathbf{s}}) \...
geoGAM.Rd:154-158: Undefined control sequence: \ensuremath in ...mathrm{Prob}[Y(\ensuremath{\mathbf{s}})\l...
geoGAM.Rd:160: Undefined control sequence: \ensuremath in ...mathrm{Prob}[Y(\ensuremath{\mathbf{s}})\l...
geoGAM.Rd:162-163: Undefined control sequence: \ensuremath in Y(\ensuremath{\mathbf{s}}) \...
geoGAM.Rd:163-164: Undefined control sequence: \ensuremath in (\ensuremath{\mathbf{s}}) \...
geoGAM.Rd:192: Undefined control sequence: \ensuremath in f(\ensuremath{\mathbf{x}}(\e...
geoGAM.Rd:197: Undefined control sequence: \ensuremath in ...f}( \mathbf{x}(\ensuremath{\mathbf{s}}))^...
geoGAM.Rd:200: Undefined control sequence: \ensuremath in \ensuremath{\mathbf{U}}^{[...
geoGAM.Rd:202-203: Undefined control sequence: \ensuremath in ...
  			\mathbf{x}(\ensuremath{\mathbf{s}}))_...
geoGAM.Rd:203: Undefined control sequence: \ensuremath in \ensuremath{\mathbf{U}}^{[...
geoGAM.Rd:204: Undefined control sequence: \ensuremath in g(\mathbf{x}(\ensuremath{\mathbf{s}}))_...
geoGAM.Rd:206-207: Undefined control sequence: \ensuremath in ...f}( \mathbf{x}(\ensuremath{\mathbf{s}}))^...
geoGAM.Rd:239: Undefined control sequence: \ensuremath in f_j(x_j(\ensuremath{\mathbf{s}}))
predict.geoGAM.Rd:41-46: Undefined control sequence: \ensuremath in ...	\mathrm{E}[ Y(\ensuremath{\mathbf{s}})\,...
predict.geoGAM.Rd:48: Undefined control sequence: \ensuremath in \hat f(\ensuremath{\mathbf{x}}(\e...
predict.geoGAM.Rd:50: Undefined control sequence: \ensuremath in ...x{Var}[ \hat f(\ensuremath{\mathbf{x}}(\e...
predict.geoGAM.Rd:50: Undefined control sequence: \ensuremath in \hat f(\ensuremath{\mathbf{x}}(\e...
predict.geoGAM.Rd:54-58: Undefined control sequence: \ensuremath in ...}(s) = \hat{f}(\ensuremath{\mathbf{x}}(\e...
predict.geoGAM.Rd:60: Undefined control sequence: \ensuremath in \hat{f}(\ensuremath{\mathbf{x}}(\e...
predict.geoGAM.Rd:60: Undefined control sequence: \ensuremath in Var[ \hat{f}(\ensuremath{\mathbf{x}}(\e...
predict.geoGAM.Rd:60: Undefined control sequence: \ensuremath in \hat{f}(\ensuremath{\mathbf{x}}(\e...