Found the following significant warnings:
  ../inst/include/lesstimate/include/lesstimate/ista_class.h:306:29: warning: 'bool arma::is_finite(eT, const typename arma_scalar_only<eT>::result*) [with eT = double; typename arma_scalar_only<eT>::result = double]' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  ../inst/include/lesstimate/include/lesstimate/ista_class.h:318:29: warning: 'bool arma::is_finite(eT, const typename arma_scalar_only<eT>::result*) [with eT = double; typename arma_scalar_only<eT>::result = double]' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  ../inst/include/lesstimate/include/lesstimate/ista_class.h:369:31: warning: 'bool arma::is_finite(const Base<typename T1::elem_type, T1>&) [with T1 = Mat<double>; typename T1::elem_type = double]' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  ../inst/include/lesstimate/include/lesstimate/bfgs.h:71:25: warning: 'bool arma::is_finite(const Base<typename T1::elem_type, T1>&) [with T1 = Mat<double>; typename T1::elem_type = double]' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  ../inst/include/lesstimate/include/lesstimate/glmnet_class.h:306:27: warning: 'bool arma::is_finite(eT, const typename arma_scalar_only<eT>::result*) [with eT = double; typename arma_scalar_only<eT>::result = double]' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  ../inst/include/lesstimate/include/lesstimate/glmnet_class.h:346:29: warning: 'bool arma::is_finite(const Base<typename T1::elem_type, T1>&) [with T1 = Mat<double>; typename T1::elem_type = double]' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
  ../inst/include/lesstimate/include/lesstimate/glmnet_mcp.h:282:29: warning: 'bool arma::is_finite(eT, const typename arma_scalar_only<eT>::result*) [with eT = double; typename arma_scalar_only<eT>::result = double]' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  ../inst/include/lesstimate/include/lesstimate/glmnet_lsp.h:216:29: warning: 'bool arma::is_finite(eT, const typename arma_scalar_only<eT>::result*) [with eT = double; typename arma_scalar_only<eT>::result = double]' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  ../inst/include/lesstimate/include/lesstimate/bfgsOptim.h:188:27: warning: 'bool arma::is_finite(eT, const typename arma_scalar_only<eT>::result*) [with eT = double; typename arma_scalar_only<eT>::result = double]' is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  ../inst/include/lesstimate/include/lesstimate/bfgsOptim.h:226:29: warning: 'bool arma::is_finite(const Base<typename T1::elem_type, T1>&) [with T1 = Mat<double>; typename T1::elem_type = double]' is deprecated: change arma::is_finite(X) to X.is_finite() [-Wdeprecated-declarations]
See 'd:/Rcompile/CRANpkg/local/4.6/lessSEM.Rcheck/00install.out' for details.
* used C++ compiler: 'g++.exe (GCC) 14.2.0'